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Low-lying T=0 states in the odd-odd N=Z nucleus 62 Ga

Research output: Contribution to journalArticle

  • H.M. David
  • P.J. Woods
  • G. Lotay
  • T. Davinson
  • D.T. Doherty
  • D. Seweryniak
  • M. Albers
  • M. Alcorta
  • M.P. Carpenter
  • C.J. Chiara
  • C.R. Hoffman
  • R.V.F. Janssens
  • T. Lauritsen
  • A.M. Rogers
  • S. Zhu

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http://www.sciencedirect.com/science/article/pii/S0370269313007855
Original languageEnglish
Pages (from-to)665-669
Number of pages5
JournalPhysics Letters B
Volume726
Issue number4-5
DOIs
StatePublished - 4 Nov 2013

Abstract

New, low-lying levels in the odd-odd, N = Z nucleus Ga-62 have been identified using a sensitive technique, where in-beam gamma rays from short-lived nuclei are tagged with beta decays following recoil mass identification. A comparison of the results with shell-model and IBM-4 calculations demonstrates good agreement between theory and experiment, with the majority of predicted low-lying, low-spin T = 0 states now identified. There is a dramatic change in the level density at low excitation energies for the N = Z nucleus Ga-62 when compared with neighbouring odd-odd Ga isotopes where, in contrast, the low-lying level structure is dominated by configurations with T = 1 pairing interactions between excess neutrons. This illustrates the distinctively different aspects of nuclear structure exhibited by nuclei with N = Z.

    Research areas

  • Isospin, N = Z, Levels, Shell-model, IBM-4

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