High-spin yrast states in the γ-soft nuclei 135Pr and 134Ce

E. S. Paul, C. Fox, A. J. Boston, H. J. Chantler, C. J. Chiara, R. M. Clark, M. Cromaz, M. Descovich, P. Fallon, D. B. Fossan, A. A. Hecht, T. Koike, I. Y. Lee, A. O. MacChiavelli, P. J. Nolan, K. Starosta, R. Wadsworth, I. Ragnarsson

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

High-spin states have been studied in 59135Pr, populated through the 116Cd(23Na,4n) reaction at 115 MeV, using the Gammasphere γ-ray spectrometer. The negative-parity yrast band has been significantly extended to spin ∼45 and excitation energy 21.5 MeV, showing evidence for several rotational alignments. The positive-parity yrast band of 58134Ce, populated through the p4n channel of this reaction, was also populated to spin ∼38 and excitation energy 18 MeV. Cranking calculations indicate that these nuclei are soft with respect to the triaxiality parameter γ and that several competing nuclear shapes occur at high spin.

Original languageEnglish
Article number047302
JournalPhysical Review C - Nuclear Physics
Volume84
Issue number4
DOIs
Publication statusPublished - 2011 Oct 17

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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