Edinburgh Research Explorer

Proton radioactivity from highly deformed nuclei

Research output: Contribution to journalArticle

  • C.N. Davids
  • P.J. Woods
  • D. Seweryniak
  • A.A. Sonzogni
  • J.C. Batchelder
  • C.R. Bingham
  • T. Davinson
  • D.J. Henderson
  • R.J. Irvine
  • G.L. Poli
  • J. Uusitalo
  • W.B. Walters

Related Edinburgh Organisations

Original languageEnglish
Pages (from-to)1849-1852
Number of pages4
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 1 Jan 1998


Proton radioactivity from Ho and Eu has been identified. The Ho proton transition has an energy E = 1169(8) keV, a half-life t = 4.2(4) ms, and is assigned to the decay of the 7/2[523] Nilsson state. The Eu transition has an energy E = 950(8) keV and a half-life of 26(6) ms, consistent with decay from either the 3/2[411] or 5/2[413] Nilsson orbital. The proton decay rates deviate significantly from calculations assuming spherical configurations, and thus indicate the onset of large deformations in the region of the proton drip line below Z = 69.

ID: 14704823