Edinburgh Research Explorer

Proton and α radioactivity of Bi

Research output: Contribution to journalArticle

  • G.L. Poli
  • C.N. Davids
  • P.J. Woods
  • D. Seweryniak
  • M.P. Carpenter
  • J.A. Cizewski
  • T. Davinson
  • A. Heinz
  • R.V.F. Janssens
  • C.J. Lister
  • J.J. Ressler
  • A.A. Sonzogni
  • J. Uusitalo
  • W.B. Walters

Related Edinburgh Organisations

Original languageEnglish
Pages (from-to)443041-443043
Number of pages3
JournalPhysical Review C
Issue number4
Publication statusPublished - 1 Apr 2001


Proton and α emission from Bi have been confirmed and measured with improved statistics. The Bi nuclei were produced via the Mo(Mo,pn) reaction at a bombarding energy of 420 MeV. The proton decay energy from the 1/2 intruder state in Bi to the Pb ground state was measured to be 1.598(16) MeV with a proton branching ratio b, = 0.85(6). An α decay branch from the same state was measured, b = 0.15(6), with an energy of 8.08(3) MeV. The state has a half-life of 50(8) μs. In addition, the α branching ratio of the ground state of Pb was determined for the first time to be b = 0.23(14).

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