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Band crossing and shape evolution in Ge 73

  • J. J. Sun
  • , C. Xu
  • , X. Q. Li
  • , H. Hua
  • , S. Q. Zhang
  • , F. R. Xu
  • , W. Y. Liang
  • , C. F. Jiao
  • , J. Meng
  • , X. G. Wu
  • , S. P. Hu
  • , H. Q. Zhang
  • , Z. H. Li
  • , Y. L. Ye
  • , D. X. Jiang
  • , Y. Y. Cheng
  • , C. He
  • , R. Han
  • , C. Y. Niu
  • , C. G. Li
  • C. G. Wang, Z. H. Li, G. S. Li, C. Y. He, Y. Zheng, C. B. Li, H. W. Li, J. L. Wang, J. J. Liu, Y. H. Wu, P. W. Luo, S. H. Yao, B. B. Yu, X. P. Cao, H. B. Sun
  • Peking University
  • China Academy of Engineering Physics
  • China National Nuclear Corporation
  • Shenzhen University

Research output: Contribution to journal › Article › peer-review

Abstract

The spectroscopy of Ge73 has been investigated via the Zn70(Li7,3np)Ge73 fusion-evaporation reaction. A previously known band built on the ν(f5/2) orbital is extended up to higher-spin states and a new rotational band built on the ν(g9/2) orbital is established. The observed band crossing and shape evolution induced by the alignment in Ge73 are studied in comparison with the similar structures in the neighboring N=41 isotones and the cranked Woods-Saxon-Strutinsky calculations by means of total-Routhian-surface (TRS) methods. The inversion of the order of the g9/2 neutron and the g9/2 proton crossing frequency observed in the negative-parity ν(f5/2) bands between Ge73 and Se75, Kr77 can be ascribed to their different triaxial deformations. At higher spins, both the ν(f5/2) and ν(g9/2) bands in Ge73 undergo a shape evolution with sizable alignments occurring. The characters of large signature splitting in ν(g9/2) band of Ge73 are discussed.

Original languageEnglish
Article number054302
JournalPhysical Review C - Nuclear Physics
Volume92
Issue number5
DOIs
StatePublished - 9 Nov 2015
Externally publishedYes

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