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

  • 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, Lucia Popescu, A.M. Rogers, G. Susoy, C. Stodel, T. Suzuki, A. Tamii, J.C. Thomas, Marc Schyns

    Research outputpeer-review

    Abstract

    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
    Volume112
    DOIs
    StatePublished - 3 Jun 2014

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