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

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

Research output: Contribution to journalArticlepeer-review

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.
Original languageEnglish
Pages (from-to)665-669
Number of pages5
JournalPhysics Letters B
Volume726
Issue number4-5
DOIs
Publication statusPublished - 4 Nov 2013

Keywords

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

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