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First order shape transition and critical point nuclei in Sm isotopes from relativistic mean field approach

Abstracts

The critical point nuclei in Sm isotopes, which marks the first order phase transition between spherical U(5) and axially deformed shapes SU(3), have been investigated in the microscopic quadrupole constrained relativistic mean field (RMF) model plus BCS method with all the most used interactions, i.e., NL1, NL3, NLSH and TM1. The calculated potential energy surfaces show a clear shape transition for the even-even Sm isotopes with N = 82 ? 96 and the critical point nuclei are found to be 148Sm, 150Sm and 152Sm. Similar conclusions can also be drawn from the microscopic neutron and proton single particle spectra.
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Recommended references: J. Meng,W. Zhang,S.-G. Zhou,H. Toki,and L.S. Geng.(2017).First order shape transition and critical point nuclei in Sm isotopes from relativistic mean field approach.[ChinaXiv:201708.00269] (Click&Copy)
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[V1] 2017-08-22 20:09:50 chinaXiv:201708.00269V1 Download
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