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- Title
NEW RESULTS NEAR <sup>100</sup>Sn: OBSERVATION OF SINGLE-NEUTRON STATES IN <sup>101</sup>Sn.
- Authors
SEWERYNIAK, D.; CARPENTER, M. P.; GROS, S.; HECHT, A. A.; HOTELING, N.; JANSSENS, R. V. F.; KHOO, T. L.; LAURITSEN, T.; LISTER, C. J.; LOTAY, G.; PETERSON, D.; ROBINSON, A. P.; WALTERS, W. B.; WANG, X.; WOODS, P. J.; ZHU, S.
- Abstract
A search for in-beam γ-ray transitions in 101Sn, which contains only one neutron outside the 100Sn core, using a novel approach was carried out at the Argonne Tandem-Linac System. 101Sn nuclei were produced using the 46Ti(58Ni, 3n)101Sn fusion-evaporation reaction. Beta-delayed protons with energies and decay times consistent with previous 101Sn decay studies were observed at the focal plane of the Fragment Mass Analyzer. In-beam γ rays were detected in the Gammasphere Ge-detector array and were correlated with the 101Sn β-delayed protons using the Recoil-Decay Tagging method. As a result, a γ-ray transition between the single-neutron vg7/2 and vd5/2 states situated at the Fermi surface was identified. The measured vg7/2-vd5/2 energy splitting was compared with predictions corresponding to various mean-field potentials and was used to calculate multi-neutron configurations in light Sn isotopes. Similar approach can be used to study core excitations in 101Sn and other exotic nuclei near 100Sn.
- Subjects
NEUTRONS; TIN; GAMMA rays; NUCLEAR physics; NUCLEAR fusion; PROTONS; EXOTIC nuclei
- Publication
Acta Physica Polonica B, 2009, Vol 40, Issue 3, p621
- ISSN
0587-4254
- Publication type
Article