1. Fine structure in the α decay of 218At
- Author
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Cubiss, JG, Andreyev, AN, Barzakh, AE, Andel, B, Antalic, S, Cocolios, TE, Goodacre, TD, Fedorov, DV, Fedosseev, VN, Ferrer Garcia, R, Fink, DA, Gaffney, LP, Ghys, L, Huyse, M, Kalaninová, Z, Köster, U, Marsh, BA, Molkanov, PL, Rossel, RE, Rothe, S, Seliverstov, MD, Sels, S, Sjödin, AM, Stryjczyk, M, L.Truesdale, V, Van Beveren, C, Van Duppen, P, and Wilson, GL
- Abstract
An α-decay study of 218At was performed at the CERN-ISOLDE facility. Laser-ionized beams of 218At were mass separated and implanted into an α−γ detection setup. Coincidence α−γ data were collected for the first time and a more precise half-life value of T1/2=1.27(6) s was measured. A new α-decay scheme was deduced based on the extracted reduced α-decay widths for fine-structure decays. The results from this work lead to a preferred spin and parity assignment of Jπ=(3−); however, Jπ=(2)− cannot be fully excluded.
- Published
- 2019