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Abstract

The relativistic mean field theory is used to investigate the shape evolution of Pt isotopes. The calculated binding energy and deformation parameter 2 are consistent with those obtained in experiment. The potential energy surfaces and the single particle levels show the shape evolution for Pt isotopes. From N=88 to N=126, the shapes for Pt nuclei evolve from spherical shapes to X(5), and then to shapes of stable quadruple deformation, finally back to the spherical shapes. In detail, 166-172Pt are spherical. 174Pt and 192-196Pt possess the X(5) symmetry. 176-190Pt are deformed nuclei. 204Pt holds spherical shape. These results in agreement with the experimental observations.

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1.
Funds:Project supported by the National Natural Science Foundation of China (Grant No. 11175001), the Program for New Century Excellent Talents in University of China (Grant No. NCET-05-0558), the Program for Excellent Talents in Anhui Province, China (Grant No. 2007Z018), the Natural Science Foundation of Anhui Province, China (Grant No. 11040606M07), the Education Committee Foundation of Anhui Province, China (Grant No. KJ2009A129), and the 211 Project of Anhui University, China.

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Vol. 61, Issue 10 - 2012-05-20

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