HIGH-SPIN STRUCTURES IN Pr-139

E. Y. Yeoh,S. J. Zhu,Z. G. Xiao,J. G. Wang,R. S. Wang,M. Zhang,W. H. Yan, Q. Xu,H. J. Li,X. G. Wu,C. Y. He,G. S. Li, Y. Zheng,C. B. Li,S. P. Hu, S. H. Yao

NUCLEAR STRUCTURE IN CHINA 2012（2013）

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摘要

The high-spin states of Pr-139 have been investigated by using Sn-124(F-19,4n) reaction at a beam energy of 80 MeV. The level scheme has been expanded with spin up to 45/2 h. Four collective band structures are observed. One band is assigned as a decoupled band, two bands are proposed as the oblate bands with gamma similar to -60 degrees, and another band has been suggested as the oblate-triaxial deformation with gamma similar to -90 degrees.

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关键词

nuclear structure,high-spin state,oblate band

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