COLLAPS 2012 – Status and Outlook
COLLAPS 2012 – Status and Outlook
The Year @ COLLAPS
2
IS 529 Spins, Moments and Charge Radii Beyond 48Ca
IS 497 Laser Spectroscopy of Cadmium Isotopes: Probing the Nuclear Structure Between the Neutron 50 and 82 Shell Closures
IS 484 Ground-state properties of K-isotopes from laser and β-NMR spectroscopy
I 88 β-NMR as a novel technique for biological applications
IS 508 Collinear laser spectroscopy of manganese isotopes using optical pumping in ISCOOL
IS 529: Spins, Moments and Charge Radii Beyond 48Ca
3
Proposal Objectives: 49..52Ca First use of the new optical detection station with ions.
Tac ≈ 100 ms
Tb ≈3μs
release
IS 529: Spins, Moments and Charge Radii Beyond 48Ca
4
52Ca with ≈ 300 ions/s after 4 hours
38 40 42 44 46 48 50 52
-0.15
0.0499999999999999
0.25
0.45
A
δ<r2
>
IS 497: Laser Spectroscopy of Cadmium Isotopes: Probing the Nuclear Structure Between the Neutron 50 and 82 Shell Closures
5
Proposal Objectives: 100..130CdIn the process of reaching this a new wavelength range was opened up.
Commissioning of the laser system
860 nm
430 nm
215 nm
35 mW output maintained over 5 hours
IS 497: Laser Spectroscopy of Cadmium Isotopes: Probing the Nuclear Structure Between the Neutron 50 and 82 Shell Closures
7
130Cd#
coun
ts
dn
transition in Cd II:5s 2S1/2 → 5p 2P3/2
@ 214 nm
IS 484: Ground-state properties of K-isotopes from laser and β-NMR spectroscopy
8
N=20 N=28
40Ca
35P
41Ca
39Ar
38Cl
37S
36P
39Cl
38S
37P
42K
41Ar
40Cl
39S
38P
43K
42Ar
41Cl
40S
39P
45Ca
44K
43Ar
42Cl
41S
40P
45K
44Ar
43Cl
42S
41P
47Ca
46K
45Ar
44Cl
43S
42P
47K
46Ar
45Cl
44S
43P
39Ca
38K
37Ar
36Cl
35S
34P
42Ca 43Ca 44Ca 46Ca 48Ca
39K 40K 41K
40Ar38Ar
37Cl
36S
pd3/2
ps1/2
Z=17
Z=20
nf7/2 np3/2
Z=19 48K 49K 50K 51K
(1/2,3/2)?
IS 484: Ground-state properties of K-isotopes from laser and β-NMR spectroscopy
9
Proposal Objectives: 51K
I 88: β-NMR as a novel technique for biological applications
10
Objective: Demonstrate online β-NMR in liquid samples . Pressure-dependent β-decay asymmetry
MgO single crystalIonic liquidBeam transmission
I 88: β-NMR as a novel technique for biological applications
11
EMIM-Ac
βNMR spectrum for 31Mg in ionic liquid EMIM-Ac
IS 508: Collinear laser spectroscopy of manganese isotopes using optical pumping in ISCOOL
12
Proposal Objectives: 57..66Mn 10.5 shifts of 18 taken.51..64Mn measured including 58,60,62Mn isomers .
N=32
IS 508: Collinear laser spectroscopy of manganese isotopes using optical pumping in ISCOOL
13
Outlook for Ca
14
Radioactive detection of Optically pumped ions after state selective Charge exchange (ROC)
C harge exchange ce ll
Ion beamO ptical pum ping zone
Laser beam
Iondece lera tor
β detector
Tape transport
2S 1/2
2P 1/2
2D 3/2
397.0 nm
The theoretical possibilities:1 ion/s of an even isotope over 5 shifts.
Outlook for Cd
15
Yields drop by 2 orders of magnitude per isotope beyond 100 or 130… The limit.
But
Laser system developed opens up many more possibilities in this region And beyond.
Publications of spins moments and charge radii in preparation .
-> See poster by D. T. Yordanov for more details.
Outlook for K
16
Publications: Spins and Moments (J Papuga et al.) in preparation.Charge radii (K. Kreim et al.) in preparation.
See Poster by Jasna for details.
Future prospects: With an intensity upgrade 52K comes into reach. Quadrupole moments may also shed light on the structural evolution in this region .
Outlook for Bio - β-NMR
17
Publications: Proof of concept results in preparation for publication.See talk by A. Gottberg.
Future prospects: Enormous possibilities for both Biological and Solid State physics .
but
Will require a dedicated beamline and laser systems.
Possibilities to develop polarized beams for an entire range of elements.
Outlook for Mn
18
Analysis underway by B. Cheal and C. Babcock.
Realignment of ISCOOL during the shutdown will allow optical pumping in the cooler for this case and others.
- 65, 66Mn are then easily reached.
Thanks To
19
Carla Babcock4, Dimiter Balabanski1, Mark Bissell2, Ivan Budincevic2, Klaus Blaum3, Bradley Cheal4, Marieke de Rydt2, Nadja Frömmgen5, Ronald Garcia Ruiz2, Georgi Georgiev6, Christopher Geppert7,8, Michael Hammen5, Hanne Heylen2, Magdalena Kowalska9, Kim Kreim3, Andreas Krieger5,8, Rainer Neugart3, Gerda Neyens2, Wilfried Nörtershäuser8,10,5, Jasna Papuga2, Mustafa Rajabali2, Rodolfo Sanchez-Alarcon7,10, Stefan Schmidt5,8,10 and Deyan Yordanov3
— 1INRNE, Bulgarian Academy of Science, BG-1784 Sofia,Bulgaria — 2Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, Belgium — 3Max-Planck-Institut für Kernphysik,Heidelberg, Deutschland—4School of Physics and Astronomy, University of Manchester, M13 9PL, UK — 5Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, Deutschland — 6CSNSM-IN2P3-CNRS, Universit/ 𝑒 de Paris Sud, F-91405 Orsay, France — 7Helmholtz-Institut Mainz, Mainz, Deutschland — 8Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Deutschland — 9CERN,Physics Department, Geneva, Switzerland—10GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Deutschland