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arXiv · 1311.5637

Shape coexistence and triaxiality in nuclei near 80Zr

S. J. Zheng·F. R. Xu·S. F. Shen·H. L. Liu·R. Wyss
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Abstract

Total-Routhian-Surface calculations have been performed to investigate the shape evolutions of $A\sim80$ nuclei, $^{80-84}$Zr, $^{76-80}$Sr and $^{84,86}$Mo. Shape coexistences of spherical, prolate and oblate deformations have been found in these nuclei. Particularly for the nuclei, $^{80}$Sr and $^{82}$Zr, the energy differences between two shape-coexisting states are less than 220 keV. At high spins, the $g_{9/2}$ shell plays an important role for shape evolutions. It has been found that the alignment of the $g_{9/2}$ quasi-particles drives nuclei to be triaxial.

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S. J. Zheng, F. R. Xu, S. F. Shen, H. L. Liu, R. Wyss. 2013-11-22. Shape coexistence and triaxiality in nuclei near 80Zr. https://doi.org/10.1103/physrevc.90.064309

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