Shape coexistence studied in 182,184Hg via the β decay of 182,184Tl

E Rapisarda, A N Andreyev, S Antalic, A Barzakh, T E Cocolios, I G Darby, R De Groote, H De Witte, J Diriken, J Elseviers, D Fedorov, V N Fedosseev, R Ferrer, M Huyse, Z Kalaninová, U Köster, J Lane, V Liberati, K M Lynch, B A MarshP L Molkanov, D Pauwels, T J Procter, D Radulov, K Sandhu, M D Seliverstov, C Van Beveren, P Van den Bergh, P Van Duppen, M Venhart, M Veselský, K Wrzosek-Lipska

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The β +/EC decay of 182,184Tl to excited states in the daughter nuclei 182,184Hg has been investigated at the CERN on-line isotope mass separator facility. In both Tl nuclei two β-decaying states were observed. In the case of 184Tl, narrow-band laser spectroscopy could be used to disentangle the decay of both isomers. In 182Hg a precise energy of 335 (1) keV for the 0+ 2 state was measured together with its feeding from a tentatively proposed 2+ 3 state at 973 keV. Large conversion coefficients for the 2 + + 2 1 → 2 transition in 182,184Hg were measured to be 7.2 (13) and 14.2 (36), respectively, evidencing a strong E0 component.

Original languageEnglish
Article number074001
Pages (from-to)1-18
Number of pages18
JournalJournal of physics g-Nuclear and particle physics
Issue number7
Publication statusPublished - 31 May 2017

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  • Radioactive nuclei
  • shape coexistence
  • β decay
  • γ spectroscopy

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