alpha decay of At-194
| Autor: | Andreev, Andrei, Antalic, S, Ackermann, D, Bianco, L, Franchoo, S, Heinz, S, Hessberger, FP, Hofmann, S, Huyse, Marc, Kojouharov, I, Kindler, B, Lommel, B, Mann, R, Nishio, K, Page, RD, Ressler, JJ, Sapple, P, Streicher, B, Saro, S, Sulignano, B, Thomson, J, Van Duppen, Piet, Venhart, Martin |
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| Přispěvatelé: | Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Physical Review C Physical Review C, American Physical Society, 2009, 79, pp.064320. ⟨10.1103/PhysRevC.79.064320⟩ |
| ISSN: | 2469-9985 2469-9993 |
| DOI: | 10.1103/PhysRevC.79.064320⟩ |
| Popis: | Detailed alpha-decay studies of the neutron-deficient isotope At-194 have been performed in the complete fusion reaction Fe-56+Pr-141 -> At-194+3n at the velocity filter SHIP. Two alpha-decaying isomeric states with half-lives of T-1/2(At-194(m1))=310(8) ms and T-1/2(At-194(m2))=253(10) ms were identified in this nucleus. Their complex decays to the states in the daughter nucleus Bi-190 are discussed in the article. We propose that similar to the case of the neighboring At-191,At-192,At-193,At-195 isotopes, the oblate-deformed configurations based on the proton 1/2(+)[440] and/or 7/2(-)[514] Nilsson orbitals become important in At-194. A new isomeric state with the half-life of 175(8) ns was observed in Bi-190.. ispartof: Physical Review C, Nuclear Physics vol:79 issue:6 pages:1-12 status: published |
| Databáze: | OpenAIRE |
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