Detailed -decay study of Tl

Tlの崩壊特性

Andel, B.*; Andreyev, A. N.; Antalic, S.*; Barzakh, A.*; Bree, N.*; Cocolios, T. E.*; Comas, V. F.*; Diriken, J.*; Elseviers, J.*; Fedorov, D. V.*; Fedosseev, V. N.*; Franchoo, S.*; Ghys, L.*; Heredia, J. A.*; Huyse, M.*; Ivanov, O.*; Kster, U.*; Liberati, V.*; Marsh, B. A.*; 西尾 勝久   ; Page, R. D.*; Patronis, N.*; Seliverstov, M. D.*; Tsekhanovich, I.*; Van den Bergh, P.*; Van De Walle, J.*; Van Duppen, P.*; Venhart, M.*; Vermote, S.*; Veselsk, M.*; Wagemans, C.*

Andel, B.*; Andreyev, A. N.; Antalic, S.*; Barzakh, A.*; Bree, N.*; Cocolios, T. E.*; Comas, V. F.*; Diriken, J.*; Elseviers, J.*; Fedorov, D. V.*; Fedosseev, V. N.*; Franchoo, S.*; Ghys, L.*; Heredia, J. A.*; Huyse, M.*; Ivanov, O.*; Kster, U.*; Liberati, V.*; Marsh, B. A.*; Nishio, Katsuhisa; Page, R. D.*; Patronis, N.*; Seliverstov, M. D.*; Tsekhanovich, I.*; Van den Bergh, P.*; Van De Walle, J.*; Van Duppen, P.*; Venhart, M.*; Vermote, S.*; Veselsk, M.*; Wagemans, C.*

A detailed -decay spectroscopy study of Tl has been performed at ISOLDE (CERN). Z-selective ionization by the Resonance Ionization Laser Ion Source (RILIS) coupled to mass separation provided a high-purity beam of Tl. Fine-structure decays to excited levels in the daughter Au were identified and an -decay scheme of Tl was constructed based on an analysis of - and - - coincidences. Multipolarities of several -ray transitions deexciting levels in Au were determined. Based on the analysis of reduced -decay widths, it was found that all decays are hindered, which signifies a change of configuration between the parent and all daughter states.