Edinburgh Research Explorer

Proton decay of the highly deformed odd-odd nucleus Eu

Research output: Contribution to journalArticle

  • C.N. Davids
  • P.J. Woods
  • H. Mahmud
  • T. Davinson
  • A. Heinz
  • J.J. Ressler
  • K. Schmidt
  • D. Seweryniak
  • J. Shergur
  • A.A. Sonzogni
  • W.B. Walters

Related Edinburgh Organisations

Original languageEnglish
Pages (from-to)113021-113023
Number of pages3
JournalPhysical Review C
Issue number1
Publication statusPublished - 1 Jan 2004


The proton decay of the highly deformed odd-odd nucleus Eu has been observed by bombarding a Ni target with a beam of 425 MeV Kr ions. Fusion evaporation residues were separated in-flight using the Argonne fragment mass analyzer and implanted into a double-sided silicon strip detector. Eu decays by the emission of a proton with energy E= 1020(15) keV [Q = 1028(15) keV] and half-life t =0.90ms. The transition is assigned to a highly deformed (β ∼ 0.3) J =1 ground-state configuration by comparing the decay rate with a new theoretical formalism for deformed odd-odd nuclei. These results clearly demonstrate the sensitivity of the proton decay rate to the spectator neutron configuration.

ID: 14691351