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

Abstract : A detailed $\alpha$-decay spectroscopy study of $^{180}\mathrm{Tl}$ 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 $^{180}\mathrm{Tl}$. Fine-structure $\alpha$ decays to excited levels in the daughter $^{176}\mathrm{Au}$ were identified and an $\alpha$-decay scheme of $^{180}\mathrm{Tl}$ was constructed based on an analysis of $\alpha$-$\gamma$ and $\alpha$-$\gamma$-$\gamma$ coincidences. Multipolarities of several $\gamma$-ray transitions deexciting levels in $^{176}\mathrm{Au}$ 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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Phys.Rev.C, 2017, 96 (5), pp.054327. 〈10.1103/PhysRevC.96.054327〉
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https://hal.archives-ouvertes.fr/hal-01669670
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Soumis le : mercredi 20 décembre 2017 - 23:56:16
Dernière modification le : mercredi 12 décembre 2018 - 03:09:39

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B. Andel, A.N. Andreyev, S. Antalic, A. Barzakh, N. Bree, et al.. Detailed $\alpha$-decay study of $^{180}\mathrm{Tl}$. Phys.Rev.C, 2017, 96 (5), pp.054327. 〈10.1103/PhysRevC.96.054327〉. 〈hal-01669670〉

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