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0(gs)+ -->2(1)+ transition strengths in 106Sn and 108Sn.

Ekström, Andreas LU ; Cederkäll, Joakim LU ; Fahlander, Claes LU ; Hjorth-Jensen, M; Ames, F; Butler, P A; Davinson, T; Eberth, J; Fincke, F and Görgen, A, et al. (2008) In Physical Review Letters 101(1).
Abstract
The reduced transition probabilities, B(E2; 0(gs)+ -->2(1)+), have been measured in the radioactive isotopes (108,106)Sn using subbarrier Coulomb excitation at the REX-ISOLDE facility at CERN. Deexcitation gamma rays were detected by the highly segmented MINIBALL Ge-detector array. The results, B(E2;0(gs)+ -->2(1)+)=0.222(19)e2b2 for 108Sn and B(E2; 0(gs)+-->2(1)+)=0.195(39)e2b2 for 106Sn were determined relative to a stable 58Ni target. The resulting B(E2) values are approximately 30% larger than shell-model predictions and deviate from the generalized seniority model. This experimental result may point towards a weakening of the N=Z=50 shell closure.
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Physical Review Letters
volume
101
issue
1
publisher
American Physical Society
external identifiers
  • wos:000257424700019
  • pmid:18764107
  • scopus:46949084221
ISSN
1079-7114
DOI
10.1103/PhysRevLett.101.012502
language
English
LU publication?
yes
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1f14ad6f-cc43-4709-a3d5-46f10e4ff655 (old id 1243492)
date added to LUP
2009-03-02 15:02:17
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2017-07-23 03:56:13
@article{1f14ad6f-cc43-4709-a3d5-46f10e4ff655,
  abstract     = {The reduced transition probabilities, B(E2; 0(gs)+ -->2(1)+), have been measured in the radioactive isotopes (108,106)Sn using subbarrier Coulomb excitation at the REX-ISOLDE facility at CERN. Deexcitation gamma rays were detected by the highly segmented MINIBALL Ge-detector array. The results, B(E2;0(gs)+ -->2(1)+)=0.222(19)e2b2 for 108Sn and B(E2; 0(gs)+-->2(1)+)=0.195(39)e2b2 for 106Sn were determined relative to a stable 58Ni target. The resulting B(E2) values are approximately 30% larger than shell-model predictions and deviate from the generalized seniority model. This experimental result may point towards a weakening of the N=Z=50 shell closure.},
  articleno    = {012502},
  author       = {Ekström, Andreas and Cederkäll, Joakim and Fahlander, Claes and Hjorth-Jensen, M and Ames, F and Butler, P A and Davinson, T and Eberth, J and Fincke, F and Görgen, A and Górska, M and Habs, D and Hurst, A M and Huyse, M and Ivanov, O and Iwanicki, J and Kester, O and Köster, U and Marsh, B A and Mierzejewski, J and Reiter, P and Scheit, H and Schwalm, D and Siem, S and Sletten, G and Stefanescu, I and Tveten, G M and Van de Walle, J and Van Duppen, P and Voulot, D and Warr, N and Weisshaar, D and Wenander, F and Zielińska, M},
  issn         = {1079-7114},
  language     = {eng},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {0(gs)+ -->2(1)+ transition strengths in 106Sn and 108Sn.},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.101.012502},
  volume       = {101},
  year         = {2008},
}