Göttingen 1997 – scientific programme

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HK: Hadronen und Kerne

HK 42: Kernspektroskopie, mittelschwere Kerne II

HK 42.4: Talk

Wednesday, March 26, 1997, 15:30–15:45, HS E

Beta-decay studies of the new isotope ¹⁰⁷Sb and other neutron-deficient antimony isotopes — •Z. Hu¹, M. Shibata¹, J. Agramunt², D. Cano-Ott², R. Collatz¹, M. Górska¹, H. Grawe¹, M. Hellström¹, Z. Janas³, M. Karny³, R. Kirchner¹, O. Klepper¹, A. Plochocki³, E. Roeckl¹, K. Rykaczewski³, K. Schmidt¹, A. Weber¹, and J. Żylicz³ — ¹GSI Darmstadt — ²IFIC Valencia — ³University of Warsaw

By using on-line mass separation of residues from heavy-ion induced fusion-evaporation reactions, we studied the β⁺/EC decay of neutron-deficient antimony isotopes including the new nuclide ¹⁰⁷Sb. A search for direct proton decay of ¹⁰⁵Sb did not yield a conclusive result. The experimental beta-decay half-lives of ^104−108Sb are discussed with reference to results obtained from quasi-particle random-phase approximations, while the ¹⁰⁸Sb→¹⁰⁸Sn and ¹⁰⁷Sb→¹⁰⁷Sn level schemes are interpreted in comparison with shell model predictions.