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arXiv 2210.03031nucl-th
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核物质的微观核-核光学势及其手征力的不确定性分析

Microscopic nucleus-nucleus optical potentials from nuclear matter with uncertainty analysis from chiral forces

T. R. Whitehead

摘要:

核-核光学势是由Brueckner等人首先提出的能量密度泛函方法构造的。能量密度泛函的相互作用项来自于在具有两体和三体手征核力的核物质中计算的复杂核子自能。核密度分布的计算从Skyrme泛函约束的状态方程从相同的手征力用于自能计算。弹性散射截面和融合截面的预测进行了比较,实验数据。在能量为$20 < E < 90$ MeV/N的范围内,较重的核-核系统的弹性散射与实验非常吻合,而较轻和较低能量的系统的准确描述可能需要包括集体激发。

英文摘要:

Nucleus-nucleus optical potentials are constructed from an energy density functional approach first outlined by Brueckner et al. The interaction term of the energy density functional comes from the complex nucleon self-energy computed in nuclear matter with two- and three-body chiral nuclear forces. Nuclear density distributions are calculated from Skyrme functionals constrained to the equations of state calculated from the same chiral forces used for the self-energy. Predictions for elastic scattering cross sections and fusion cross sections are compared to experimental data. Very good agreement is found with experiment for elastic scattering of heavier nucleus-nucleus systems at energies in the range of $20 < E < 90$ MeV/N, while accurate descriptions of lighter and lower-energy systems may require the inclusion of collective excitations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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