Z=50 Shell Gap near {sup 100}Sn from Intermediate-Energy Coulomb Excitations in Even-Mass {sup 106-112}Sn Isotopes

Journal Article · Fri Oct 19 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.162501· OSTI ID:21024315

Vaman, C; Bazin, D; Galaviz, D; Mueller, W F; Schiller, A; Stolz, A ^[1]; Andreoiu, C ^[2]; Becerril, A; Brown, B A; Campbell, C M; Chester, A; Cook, J M; Dinca, D C; Gade, A; Glasmacher, T; Miller, D; Moeller, V; Starosta, K; Terry, J R; Zelevinsky, V ^[1]

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1. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
2. Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1 (Canada)

Rare isotope beams of neutron-deficient {sup 106,108,110}Sn from the fragmentation of {sup 124}Xe were employed in an intermediate-energy Coulomb excitation experiment. The measured B(E2,0{sub 1}{sup +}{yields}2{sub 1}{sup +}) values for {sup 108}Sn and {sup 110}Sn and the results obtained for the {sup 106}Sn show that the transition strengths for these nuclei are larger than predicted by current state-of-the-art shell-model calculations. This discrepancy might be explained by contributions of the protons from within the Z=50 shell to the structure of low-energy excited states in this region.

• OSTI ID: 21024315
• Journal Information: Physical Review Letters, Vol. 99, Issue 16; Other Information: DOI: 10.1103/PhysRevLett.99.162501; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COULOMB EXCITATION
EXCITED STATES
NEUTRON-DEFICIENT ISOTOPES
PROTONS
SHELL MODELS
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TIN 106
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