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Single particle signatures in high-spin, quasicontinuum states in193,194Hg fromg-factor measurements

Authors
Journal
Physics Letters B
0370-2693
Publisher
Elsevier
Publication Date
Volume
446
Issue
1
Identifiers
DOI: 10.1016/s0370-2693(98)01514-7
Keywords
  • Gfactors
  • High Spin
  • Normal Deformation Structures
  • 193
  • 194Hg

Abstract

Abstract The average g factors of high spin, high-excitation energy, quasicontinuum structures in 194,193 Hg were measured by observing the precessions of the angular distributions of γ-ray transitions in several normal-deformation bands that coalesce in the decay of the entry distribution of states. The average g factors of the states leading to the three main bands in the 193,194 Hg isotopes were: 〈g( 193 Hg)〉=+0.19(1) and 〈g( 194 Hg)〉=+0.26(1), respectively. These average g factors are smaller than the average of the g factors of the high energy states in the three superdeformed bands of 194 Hg, 〈g(SD; 194 Hg)〉=+0.41(8). While the nucleus in the superdeformed well behaves like a rigid rotor, the present results demonstrate the important role played by multiple, quasiparticle neutron configurations in the structure of normal-deformation, highly-excited nuclear states.

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