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Report No.

Detailed $$alpha$$-decay study of $$^{180}$$Tl

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.*; K$"o$ster, 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$'y$, M.*; Wagemans, C.*

A detailed $$alpha$$-decay spectroscopy study of $$^{180}$$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 $$^{180}$$Tl. Fine-structure $$alpha$$ decays to excited levels in the daughter $$^{176}$$Au were identified and an $$alpha$$-decay scheme of $$^{180}$$Tl was constructed based on an analysis of $$alpha$$-$$gamma$$ and $$alpha$$-$$gamma$$ -$$gamma$$ coincidences. Multipolarities of several $$gamma$$-ray transitions deexciting levels in $$^{176}$$Au were determined. Based on the analysis of reduced $$alpha$$-decay widths, it was found that all $$alpha$$ decays are hindered, which signifies a change of configuration between the parent and all daughter states.



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Category:Physics, Nuclear



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