Observation of the β-Delayed γ-Proton Decay of 56Zn and its Impact on the Gamow-Teller Strength Evaluation

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  • S. E. A Orrigo
  • B. Rubio
  • Y. Fujita
  • B. Blank
  • W. Gelletly
  • J. Agramunt
  • A. Algora
  • P. Ascher
  • B. Bilgier
  • L. Caceres
  • R.B. Cakirli
  • H. Fujita
  • E. Ganioglu
  • M. Gerbaux
  • J. Giovinazzo
  • S. Grevy
  • O. Kamalou
  • H.C. Kozer
  • L. Kucuk
  • T. Kurtukian-Nieto
  • F. Molina
  • A.M. Rogers
  • G. Susoy
  • C. Stodel
  • T. Suzuki
  • A. Tamii
  • J.C. Thomas

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The paper reports the observation of a very exotic decay mode at the proton drip line, the β-delayed γ-proton decay, clearly seen in the β decay of the Tz = −2 nucleus 56Zn. Three γ-proton sequences have been observed after the β decay. Here this decay mode, already observed in the sd shell, is seen for the first time in the fp shell. Both γ and proton decays have been taken into account in the estimation of the Fermi and Gamow-Teller strengths. Evidence for fragmentation of the Fermi strength due to strong isospin mixing is found.


Original languageEnglish
Pages (from-to)2225011-2225015
JournalPhysical review Letters
Publication statusPublished - 3 Jun 2014


  • beta-decay measurement, 56Zn, beta-delayed gamma-proton decay, isospin mixing, charge-exchange reactions, Gamow-Teller transitions

ID: 382463