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Two proton high-spin excitations and dipole bands in192Hg

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
  • Y. Le Coz
  • N. Redon
  • A. Astier
  • R. Béraud
  • R. Duffait
  • M. Meyer
  • F. Hannachi
  • G. Bastin
  • I. Deloncle
  • B. Gall
  • M. Kaci
  • M.G. Porquet
  • C. Schück
  • F. Azaiez
  • C. Bourgeois
  • J. Duprat
  • A. Korichi
  • N. Perrin
  • N. Poffé
  • H. Sergolle
  • J.F. Sharpey-Schafer
  • C.W. Beausang
  • S.J. Gale
  • E.S. Paul
  • R.M. Clark
  • K. Hauschild
  • R. Wadsworth
  • J. Simpson
  • M.A. Bentley
  • A.G. Smith
  • H. Hübel
  • P. Willsau
  • G. De France
  • I. Ahmad
  • M. Carpenter
  • R. Henry
  • R.V.F. Janssens
  • T.L. Khoo
  • T. Lauritsen
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<mark>Journal publication date</mark>1994
<mark>Journal</mark>Zeitschrift für Physik A Hadrons and Nuclei
Issue number2
Volume348
Number of pages7
Pages (from-to)87-93
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The192Hg nucleus was populated in the160Gd(36S, 4n) reaction at a beam energy of E=159 MeV. Emittedγ-rays were detected with the EUROGAM array comprising 43 Compton-suppressed large volume Ge detectors. The level scheme of192Hg has been extended up to an excitation energy of E=10.4 MeV and spin I=34 ħ. Two new structures, made of competing ΔI=1 and ΔI=2 transitions have been observed and their connexions with the low-lying levels established. Their lowest levels are located at 6.304 MeV and 6.879 MeV excitation energy. The experimental results are compared with mean-field HF+BCS calculations. It is proposed that the new structures originate from deformation-aligned quasi-proton excitations π(i13/2 * h9/2)K=11 andπ (h9/2) K=8 2 , coupled to rotation-aligned quasi-neutron ν(i13/2)n and quasi-proton π(h11/2)2 excitations.