alpha decay study of 182,184Tl

Research output: Contribution to journalArticle


  • Celine Van Beveren
  • A N Andreyev
  • Thomas Elias Cocolios
  • Ruben P De Groote
  • D Fedorov
  • Valentin N Fedosseev
  • Rafael Ferrer
  • Mark Huyse
  • Köster Ulli
  • Joseph Lane
  • Valentina Liberati
  • Kara M Lynch
  • Bruce A Marsh
  • P.L. Molkanov
  • T.J. Procter
  • Elisa Rapisarda
  • K. Sandhu
  • Maxim Seliverstov
  • Piet Van Duppen
  • Martin Venhart
  • M. Veselsky

Institutes & Expert groups

  • KUL - Katholieke Universiteit Leuven
  • University of York
  • ASRC - Advanced Science Research Center - JAEA
  • CERN - Conseil Européen pour la Recherche Nucléaire
  • University of Manchester
  • PNPI - Petersburg Nuclear Physics Institute
  • ILL - Institut Laue Langevin
  • UWS - University of the West of Scotland
  • SAS - Slovak Academy of Sciences

Documents & links


alpha-decay spectroscopy of 182,184Tl has been performed at the CERN Isotope Separator On-Line (ISOLDE) facility. New fine structure alpha-decays have been observed for both isotopes. alpha-branching ratios of 0.089(19)%, 0.047(6)% and 1.22(17)% have been deduced for the (10-), (7+) and (2+) states respectively in 184Tl and a lower limit of 0.63(7)% for the alpha-branching ratio of 182Tl. A half-life of 9.5(2) s has been extracted for the (2+) state in 184Tl. For 182Tl a half-life of 1.9(1) s has been deduced. Using alpha-gamma coincidence analysis, multiple gamma-rays were observed de-exciting levels in 178;180Au fed by 182;184Tl decays. However, due to the complex fine-structure decays and limited knowledge about the structure of the daughter nuclei, only partial alpha-decay schemes could be constructed for both isotopes. Reduced widths have been calculated and are compared with values obtained in neighboring odd and even thallium isotopes.


Original languageEnglish
Article number025102
Number of pages22
JournalJournal of Physics G: Nuclear and Particle Physics
Issue number2
Publication statusPublished - 8 Jan 2016


  • ISOLDE, Nuclear physics, alfa decay

ID: 906031