Coulomb excitation of 127,128 Cd R. Krücken 1 , M. Gorska 2 , P. Boutachkov 2 , A. Dewald 5 , R. Gernhäuser 1 , A. Jungclaus 4 , Th. Kröll 3 , D. Mücher 1 , F. Naqvi 2 , R. Orlandi 4 , M. Pfuetzner 6 , M. Schlarb 1 et al. 1 TU München, 2 GSI Darmstadt, 3 TU Darmstadt, 4 IEM-CSIC Madrid, 5 IKP Köln, 6 Warsaw University
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Coulomb excitation of 127,128 Cd R. Krücken 1, M. Gorska 2, P. Boutachkov 2, A. Dewald 5, R. Gernhäuser 1, A. Jungclaus 4, Th. Kröll 3, D. Mücher 1, F.
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Coulomb excitation of 127,128Cd
R. Krücken1, M. Gorska2, P. Boutachkov2, A. Dewald5, R. Gernhäuser1, A. Jungclaus4, Th. Kröll3, D. Mücher1, F. Naqvi2, R. Orlandi4,
B. Pfeiffer, K. –L. Kratz and F. –K. Thielemann, Z. Phys. A 357, 235 (1997).
Langanke, K. & Martínez-Pinedo, G. Rev. Mod. Phys. 75, 819-862 (2003)
A. Jungclaus et al., PRL 99, 132501 (2007)I. Dillmann et al., Phys. Rev. Lett. 91, 16 (2003).T. Kautzch et al., Eur. Phys. J A 9, 201 (2000).M. Hannawald et al., Phys. Rev. C 62, 054301 (2000).
130Cd scrutinized: no shell quenching
Energies and B(E2) values
70 72 74 76 78 80 820
500
1000
1500
60Nd
58Ce
56Ba
54Xe
52Te
48Cd
Ene
rgy
of 2
+ s
tate
Neutron number N
• unusually low 2+ energy of 128Cd Enhanced collectivity?
Predicted B(E2) values
A. Jungclaus et al., Act. Phys. Pol. B 40, 427 (2009).T.R. Rodriguez et al. Phys. Lett. B 668 (2008) 410
Resolve via Coulomb excitation!!
• low B(E2) values predicted by SM, higher values for Beyond Mean Field
Evolution of the 11/2- structure in odd Cd
N. Hoteling et al., Phys. Rev. C 76, 044324 (2007).
R=2,5 R=2,3 R=2,1
Non-axial deformed spherical, vibrational
R=2,4 R=2,3
N. Fotiades et al., Phys. Rev. C 61, 064326 (2000)
R=2,1
• nh11/2 structure evolves from deformed at mid-shell to vibrational near N=82
• 3/2+ states similar to even-even Cd ground states?
Transition σL B(σL) (W.u)
SM Case-I Case-II
19/2+ 13/2- E3 3.82 X 10-2 2.30(30) X 10-1 3.40(18) X 10-2
19/2+ 15/2- M2 5.78 X 10-3 7.71(16) X 10-5 2.71(14) X 10-4
Case -I Case -II
739 keV 822 keV
127Cd
F. Naqvi et al., in preparation.
Transition order could be resolved via Coulomb excitation!!