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arXiv 1502.01164nucl-th
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考虑壳修正贡献的核-核势

Nucleus-nucleus potential with shell-correction contribution

V. Yu. Denisov

摘要:

球核之间的全弛豫密度势被认为是宏观和壳修正贡献的总和。势的宏观部分与在扩展的Skyrme和库仑力和弛豫密度近似的框架内获得的核-核势有关,用于评估相互作用核的质子和中子密度。讨论了总势壳修正部分的一个简单公式。通过拟合89个核-核系统的经验势垒高度和1485个核-核系统在12个接触点附近的宏观势,得到了壳修正和宏观部分的参数.

英文摘要:

The full relaxed-density potential between spherical nuclei is considered as a sum of the macroscopic and shell-correction contributions. The macroscopic part of the potential is related to a nucleus-nucleus potential obtained in the framework of the extended Thomas-Fermi approach with the Skyrme and Coulomb forces and the relaxed-density ansatz for evaluation of proton and neutron densities of interacting nuclei. A simple prescription for the shell-correction part of the total potential is discussed. The parameters of the shell-correction and macroscopic parts of the relaxed-density potential are found by fitting the empirical barrier heights of the 89 nucleus-nucleus systems as well as macroscopic potentials evaluated for 1485 nucleus-nucleus systems at 12 distances around touching points.

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