Shell-model influence in the rotational nucleus Mo86

D. Rudolph, C. J. Gross, Y. A. Akovali, C. Baktash, J. Döring, 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, and I. Ragnarsson
Phys. Rev. C 54, 117 – Published 1 July 1996
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Abstract

High-spin states in Mo86 were studied by means of the fusion evaporation reaction Ni58(32S,2p2n)86Mo at 135 MeV beam energy. Charged-particle-γγ and -γγγ 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 Tz=1 nucleus Mo86 to a possible spin of I=24ħ 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=12–16 ħ). The observed (π=+,α=0) sequence at spin I≥16ħ 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. © 1996 The American Physical Society.

  • Received 14 March 1996

DOI:https://doi.org/10.1103/PhysRevC.54.117

©1996 American Physical Society

Authors & Affiliations

D. Rudolph, C. J. Gross, Y. A. Akovali, C. Baktash, J. Döring, 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, and I. Ragnarsson

  • Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
  • Oak Ridge Institute for Science and Education, Oak Ridge, Tennessee 37831
  • Department of Physics, Florida State University, Tallahassee, Florida 32306
  • Department of Physics, Tulane University, New Orleans, Louisiana 70118
  • Chemistry Department, Washington University, St. Louis, Missouri 63130
  • Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
  • Department of Mathematical Physics, Lund Institute of Technology, Box 118, S-22100 Lund, Sweden

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Vol. 54, Iss. 1 — July 1996

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