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Two proton high spin excitations and dipole bands in 192hg

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  • Y. Le Coz
  • A. Astier
  • R. Béraud
  • R. Duffait
  • M. Meyer
  • N. Redon
  • G. Bastin
  • I. Deloncle
  • B. Gall
  • F. Hannachi
  • M. Kaci
  • M.G. Porquet
  • C. Schiick
  • F. Azaiez
  • C. Bourgeois
  • J. Duprat
  • A. Korichi
  • N. Perrin
  • N. Poffe
  • H. Sergolle
  • C.W. Beausang
  • S.J. Gale
  • E.S. Paul
  • J.F. Sharpey-Schafer
  • R.M. Clark
  • K. Hauschild
  • R. Wadsworth
  • J. Simpson
  • M.A. Bentley
  • G. Smith
  • H. Hiibel
  • 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>1995
<mark>Journal</mark>Physica Scripta
Issue numberT56
Volume1995
Number of pages2
Pages (from-to)234-235
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The 192Hg nucleus has been produced via the 36S(160Gd, 4n) reaction at a beam energy of 159 MeV. The γ-rays have been detected with the multi-detector array EUROGAM phase 1. The level scheme has been extended up to 10.4 MeV excitation energy and spin 34. Two new structures, composed of competing ΔI = 1 and ΔI = 2 transitions, have been observed and, for the first time in Mercury isotopes, some links with the previously known low-lying states have been established. These experimental results are discussed in terms of mean-field Hartree-Fock plus BCS calculations and the new bands are proposed to originate from deformation-aligned quasi-proton excitations. π(i13/2 * h9/2)kπ=11 and π(h9/2)2kπ=8+ coupled to rotation-aligned quasi-neutrons v(i13/2)n and quasi-proton π(h11/2)2 excitations.