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Proton decay of the highly deformed nucleus Tb

Research output: Contribution to journalArticle

  • P.J. Woods
  • P. Munro
  • D. Seweryniak
  • C.N. Davids
  • T. Davinson
  • A. Heinz
  • H. Mahmud
  • F. Sarazin
  • J. Shergur
  • W.B. Walters
  • A. Woehr

Related Edinburgh Organisations

Original languageEnglish
JournalPhysical Review C
Issue number5
Publication statusPublished - 1 May 2004


The proton decay of the highly deformed nucleus Tb has been observed following bombardment of a Mo target with a 310 MeV beam of Cr ions. This is the first instance of a proton-decaying isotope being produced via the 1p6n fusion-evaporation channel. Evaporation residues were separated in-flight using the Argonne fragment mass analyzer and implanted into a new design double-sided silicon strip detector. Tb decays by the emission of a proton with energy E =1179(7) keV [Q = 1188(7) keV] and half-life t =0.94 transition is assigned to a highly deformed (β ∼0.3) J =7/2 configuration by comparing the proton decay rate with calculations for deformed nuclei.

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