Shell-model Influence in the Rotational Nucleus 86Mo

Research output: Contribution to journalArticle

Abstract

High-spin states in Mo-86 were studied by means of the fusion evaporation reaction Ni-58(S-32,2p2n) Mo-86 at 135 MeV beam energy. Charged-particle-gamma gamma and -gamma gamma gamma coincidences recorded with the early implementation of the GAMMASPHERE array and the MICROBALL charged-particle detection system were used to largely extend the level scheme of the T-tau=1 nucleus Mo-86 to a possible spin of I=24h at 13 MeV excitation energy. The excitation scheme is compared to neighboring nuclei. There is evidence for enhanced shell-model influence in the 4 quasiparticle region (I=12-16h). The observed (pi=+,alpha=0) sequence at spin I greater than or equal to 16 h appears to be associated with a triaxial collective rotational band. This interpretation is supported by calculations within the configuration-dependent shell-correction approach with the cranked Nilsson potential.

Details

Authors
  • Dirk Rudolph
  • C. J. Gross
  • Y. A. Akovali
  • C. Baktash
  • J. Doring
  • F. E. Durham
  • P. F. Hua
  • G. D. Johns
  • M. Korolija
  • D. R. LaFosse
  • I. Y. Lee
  • A. O. Macchiavelli
  • W. Rathbun
  • D. G. Sarantites
  • D. W. Stracener
  • S. L. Tabor
  • A. V. Afanasjev
  • I. Ragnarsson
External organisations
  • External Organization - Unknown
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Pages (from-to)117-124
JournalPhysical Review C (Nuclear Physics)
Volume54
Issue number1
Publication statusPublished - 1996
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

1