1 Liam P. Gaffney Liam P. Gaffney Oliver Lodge Laboratory, University of Liverpool, UK Oliver Lodge Laboratory, University of Liverpool, UK Instituut voor Kern- en Stralingsfysica, KU Leuven, Belgium Instituut voor Kern- en Stralingsfysica, KU Leuven, Belgium Octupole collectivity Octupole collectivity studied using radioactive- studied using radioactive- ion beams ion beams 1
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Octupole collectivity studied using radioactive-ion beams
Octupole collectivity studied using radioactive-ion beams. Liam P. Gaffney Oliver Lodge Laboratory, University of Liverpool, UK Instituut voor Kern- en Stralingsfysica, KU Leuven, Belgium. 1. 2 λ. Odd-A. EDM. Schiff moment. CP violation. Octupole Collectivity. λ = 2 ... Quad rupole - PowerPoint PPT Presentation
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1
Liam P GaffneyLiam P Gaffney
Oliver Lodge Laboratory University of Liverpool UKOliver Lodge Laboratory University of Liverpool UK
Instituut voor Kern- en Stralingsfysica KU Leuven Belgium Instituut voor Kern- en Stralingsfysica KU Leuven Belgium
Octupole collectivityOctupole collectivitystudied using radioactive-ion studied using radioactive-ion beamsbeams
1
2
Octupole Collectivity
λ = 2 Quadrupoleλ = 3 Octupole
68Se
90Se
144Ba
148150Nd
226Ra
2λ
Octupole correlations enhanced at magic numbers 34 56 88 134
Exotic regions of the Segreacute chart so far inaccessible
Radioactive Ion Beams are the key
Schiff momen
t
CP violationEDM
Odd-ATalk by Peter Butler earlier this morning
3
Octupole CollectivityMicroscopically
Intruder orbitals of opposite parity and ∆J ∆L = 3 close to the Fermi level
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
2
Octupole Collectivity
λ = 2 Quadrupoleλ = 3 Octupole
68Se
90Se
144Ba
148150Nd
226Ra
2λ
Octupole correlations enhanced at magic numbers 34 56 88 134
Exotic regions of the Segreacute chart so far inaccessible
Radioactive Ion Beams are the key
Schiff momen
t
CP violationEDM
Odd-ATalk by Peter Butler earlier this morning
3
Octupole CollectivityMicroscopically
Intruder orbitals of opposite parity and ∆J ∆L = 3 close to the Fermi level
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
3
Octupole CollectivityMicroscopically
Intruder orbitals of opposite parity and ∆J ∆L = 3 close to the Fermi level
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
5
Octupole Collectivity
Rn (Z=86)
Z = 34
Z = 56
Z = 88 N = 134
6
Radon-220 and Radium-224
220Rn 224Ra[ref] JFC Cocks et al Phys Rev Lett 78 (1997) and Nucl Phys A 645 (1999)
7
Coulomb Excitation
Projectile (Z1A1)
Target (Z2A2)
bθ
v
Sommerfeld parameter
ldquoSaferdquo Coulex
Reduced matrix elements
8
REX-ISOLDEIsotopeSeparationOn-Line D-Etector
RIBE-Xperiment
RadioactiveIonBeam 14GeV protons
from PS BoosterA
Heated tungsten line (Ra)
Plasma ion source (Rn)
Ionised atoms diffuse out of target
B
Mass separationin HRS
C
DPost-acceleration
8 UCx
9
MINIBALL REX-ISOLDE
9
220Rn224Ra beam
~283AMeV
Coulex target~2mgcm2
10
MINIBALLbull Particle ID in a Double-Sided Si Strip Detector
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
6
Radon-220 and Radium-224
220Rn 224Ra[ref] JFC Cocks et al Phys Rev Lett 78 (1997) and Nucl Phys A 645 (1999)
7
Coulomb Excitation
Projectile (Z1A1)
Target (Z2A2)
bθ
v
Sommerfeld parameter
ldquoSaferdquo Coulex
Reduced matrix elements
8
REX-ISOLDEIsotopeSeparationOn-Line D-Etector
RIBE-Xperiment
RadioactiveIonBeam 14GeV protons
from PS BoosterA
Heated tungsten line (Ra)
Plasma ion source (Rn)
Ionised atoms diffuse out of target
B
Mass separationin HRS
C
DPost-acceleration
8 UCx
9
MINIBALL REX-ISOLDE
9
220Rn224Ra beam
~283AMeV
Coulex target~2mgcm2
10
MINIBALLbull Particle ID in a Double-Sided Si Strip Detector
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
7
Coulomb Excitation
Projectile (Z1A1)
Target (Z2A2)
bθ
v
Sommerfeld parameter
ldquoSaferdquo Coulex
Reduced matrix elements
8
REX-ISOLDEIsotopeSeparationOn-Line D-Etector
RIBE-Xperiment
RadioactiveIonBeam 14GeV protons
from PS BoosterA
Heated tungsten line (Ra)
Plasma ion source (Rn)
Ionised atoms diffuse out of target
B
Mass separationin HRS
C
DPost-acceleration
8 UCx
9
MINIBALL REX-ISOLDE
9
220Rn224Ra beam
~283AMeV
Coulex target~2mgcm2
10
MINIBALLbull Particle ID in a Double-Sided Si Strip Detector
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
8
REX-ISOLDEIsotopeSeparationOn-Line D-Etector
RIBE-Xperiment
RadioactiveIonBeam 14GeV protons
from PS BoosterA
Heated tungsten line (Ra)
Plasma ion source (Rn)
Ionised atoms diffuse out of target
B
Mass separationin HRS
C
DPost-acceleration
8 UCx
9
MINIBALL REX-ISOLDE
9
220Rn224Ra beam
~283AMeV
Coulex target~2mgcm2
10
MINIBALLbull Particle ID in a Double-Sided Si Strip Detector
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
9
MINIBALL REX-ISOLDE
9
220Rn224Ra beam
~283AMeV
Coulex target~2mgcm2
10
MINIBALLbull Particle ID in a Double-Sided Si Strip Detector
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
10
MINIBALLbull Particle ID in a Double-Sided Si Strip Detector
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
Total 55 data points[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 055
16
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
Slide 14
Slide 15
Slide 16
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
Slide 23
Slide 24
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
17
Results - 224Ra
bull Consistent with rotational model
bull Unstretched E3 matrix elements are non-zero Rot-vib model predicts these vanish
bull Coupled with level energy data we observe a static octupole deformation in 224Ra Awai
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
[1] Poynter et al Phys Lett B 232 447 (1989)[2] JFC Cocks et al Nucl Phys A 645 61 (1999)[3] Marten-Toumllle et al Z Phys A 336 27 (1990)[4] W Kurcewicz et al Nucl Phys A 289 (1977)[5] WR Neal and HW Kraner Phys Rev 137 B1164 (1965)[6] H Ton et al Nucl Phys A 155 235 (1970)
χ2 = 086
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
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Slide 32
19
Results - 220Rn
bull Consistent with rotational model
bull No information on unstretched E3
bull Larger data set required to determine if lt1-||E3||2+gt or lt1-||E3||4+gt vanish
bull Not definitive determination of collective mode dynamic (vibrational) or static (rotational) from Q3 alone
bull δE and Δix implies a coupling of an octupole phonon to the even-spin rotational band
bull Magnitude of Q3 consistent with dynamic picture similar to Q3(208Pb) and Q3(232Th)
bull Dynamic collectivity in 220Rn
Awaiting publication
Embargoed by Journal
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
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Slide 31
Slide 32
20
220Rn - Vibrational
QuickTimetrade and a decompressor
are needed to see this picture
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
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Slide 31
Slide 32
21
Discussion and Interpretation
8 -8
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
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Slide 32
22
Discussion and Interpretation
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
Slide 10
Slide 11
Slide 12
Slide 13
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Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
23
Comparison to theory
Q1
Q2
Q3
bull Cluster model [1] - Misses small Q1
- Q2 is consistently too low- Q3 trend not observed
bull Mean field HFB with D1S or D1M [2]- Predicts cancelation of Q1
- Differences in Q3 predictions
[1] Shneidman et al (2003) Phys Rev C 67(1) 14313
[2] Robledo L M amp Bertsch G F (2011) Phys Rev C 84(5) 54302
Awaiting publicationEmbargoed by Journal
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
Slide 7
Slide 8
Slide 9
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Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Slide 32
24
Summary amp Outlook
See talk by George OrsquoNeill at 1545 today
bull Demonstrated sensitivity and ability to measure E3 matrix elements with Radioactive Ion Beams (RIBs)
bull B(E3 3- -gt 0+) measured for the first time in Rn and only second measurement in Ra both to ~10 precision
bull Experimental values rule out trend of cluster models
bull Exposes detailed differences in parameterisations of mean field calculations
bull Proposal for measurements in 222226228Ra and Ba region
bull Odd-mass nuclei key to atomic EDM measurements
25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
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25
CollaboratorsTE Cocolios J Pakarinen JCederkall D Voulot F Wernander
Th Kroumlll S Boumlnig C Bauer M von SchmidB Bastin
T Grahn A HerzanA Blazhev M Seidlitz N Warr M Albers M Pfeiffer D Radeck
M Rudigier P ThoumlleP van Duppen N Bree J Diriken N Kesteloot
S Sambi K ReyndersL P Gaffney P A Butler M Scheck DT Joss SV Rigby
E KwanT Chupp
D Cline CY WuM Zielinska P Napiorkowski M Kowalczyk
DG JenkinsCERN-ISOLDE SwitzerlandTU Darmstadt GermanyGanil FranceUniversity of Jyvaumlskylauml FinlandUniversity of Koumlln Germany
KU Leuven Belgium
University of Liverpool UK Lawrence Livermore Laboratory USUniversity of Michigan USUniversity of Rochester USHIL University of Warsaw PolandUniversity of York UK
Thank youand the REX-ISOLDE and MINIBALL collaborations
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
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Slide 32
26
Aside - Protons off
bull Evidence of rapid exponential decay in beam rate after protons cease
bull Comparison of direct production vs alpha decay of parent (T12 = 366 days)
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
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Slide 32
27
Radon-220 and Radium-224
220Rn
224Ra
28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
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28
Simulation - 224Ra
29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
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29
Simulation - 224Ra
30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)
31
Gosia Analysis
32
Discussion and Interpretation - 224Ra
Slide 1
Slide 2
Slide 3
Slide 4
Slide 5
Slide 6
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30
Gosia Analysis
Measured E2 matrix elements [efm2]
TransitionalDiagonal
Measured E3 matrix elements [efm3]
StretchedUn-stretched
[Ref] H J Wollersheim et al Nucl Phys A 556 261 (1993)