Edinburgh Research Explorer

Proton decay of an intruder state in Bi

Research output: Contribution to journalArticle

  • C.N. Davids
  • P.J. Woods
  • H.T. Penttilä
  • J.C. Batchelder
  • C.R. Bingham
  • D.J. Blumenthal
  • L.T. Brown
  • B.C. Busse
  • L.F. Conticchio
  • T. Davinson
  • D.J. Henderson
  • R.J. Irvine
  • D. Seweryniak
  • K.S. Toth
  • W.B. Walters
  • B.E. Zimmerman

Related Edinburgh Organisations

Original languageEnglish
Pages (from-to)592-595
Number of pages4
JournalPhysical Review Letters
Issue number4
Publication statusPublished - 22 Jan 1996


The new proton radioactivity Bi has been observed, produced via the Mo(Mo,/Jw)Bi reaction. Its decay proceeds from the low-lying 1/2 intruder state in Bi to the Pb ground state with the emission of a proton of energy 1.585 ± 0.009 MeV and a half-life of 44 ± 16 μs. This marks the first observation of proton radioactivity above the Z = 82 closed shell, and it has been used to obtain the admixture of a 0 intruder state in Pb into the Pb ground-state wave function.

ID: 14708197