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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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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
101
issue
1
article number
012502
publisher
American Physical Society
external identifiers
  • wos:000257424700019
  • pmid:18764107
  • scopus:46949084221
  • pmid:18764107
ISSN
1079-7114
DOI
10.1103/PhysRevLett.101.012502
language
English
LU publication?
yes
id
1f14ad6f-cc43-4709-a3d5-46f10e4ff655 (old id 1243492)
date added to LUP
2016-04-01 12:33:09
date last changed
2022-03-13 19:27:29
@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.}},
  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}},
  doi          = {{10.1103/PhysRevLett.101.012502}},
  volume       = {{101}},
  year         = {{2008}},
}