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Z = 50 shell gap near 100Sn from intermediate-energy Coulomb excitations in even-mass 106-112Sn isotopes |
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| Authors: | Vaman C Andreoiu C Bazin D Becerril A Brown B A Campbell C M Chester A Cook J M Dinca D C Gade A Galaviz D Glasmacher T Hjorth-Jensen M Horoi M Miller D Moeller V Mueller W F Schiller A Starosta K Stolz A Terry J R Volya A Zelevinsky V Zwahlen H |
| Affiliation: | National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA. |
| Abstract: | Rare isotope beams of neutron-deficient 106,108,110Sn from the fragmentation of 124Xe were employed in an intermediate-energy Coulomb excitation experiment. The measured B(E2,0(1)(+)-->2(1)(+)) values for 108Sn and 110Sn and the results obtained for the 106Sn 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. |
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