论文标题
用gogny相互作用计算出的核核核核心光电位
Nucleon-Nucleus Optical Potential computed with the Gogny interaction
论文作者
论文摘要
研究了D1家族的Gogny力描述核子核子散射的能力。为此，我们使用使用半微观核物质方法构建的光学模型潜力。光学模型的真实和虚构部分分别由使用有效的Gogny力量而不是微观相互作用的反应G-Matrix在Brueckner-Hartree-Fock方法中计算出的质量运算符的泰勒扩展，而不是微观的相互作用。有限核中的光电位是通过局部密度近似获得的，该中子和质子密度由准局部Hartree-fock计算提供，以相同的gogny力为其出于一致性而获得。在理论差异横截面与弹性中子和质子散射的分析能力之间发现了合理的良好一致性，该表沿周期表散射从CA到PB，用Gogny力计算出来，以及由Koning和Delaroche的全球现象学潜力所预测的相应值。为了研究本工作中使用的近似值的限制，还进行了与使用核结构模型获得的$^{40} $ Ca和$^{40} $ CA和$^{48} $ CA的核能弹性散射结果进行比较。
The ability of the Gogny forces of the D1 family to describe the nucleon-nucleus scattering is studied. To this end, we use an optical model potential built up using a semi-microscopic nuclear matter approach. The real and imaginary parts of the optical model are provided by the first and second-order terms, respectively, of the Taylor expansion of the mass operator calculated within the Brueckner-Hartree-Fock method using the reaction G-matrix built up with the effective Gogny force instead of a microscopic interaction. The optical potential in finite nuclei is obtained through the Local Density Approximation using the neutron and proton densities provided by a quasi-local Hartree-Fock calculation with the same Gogny force for the sake of consistency. A reasonable good agreement is found between the theoretical differential cross-sections and the analyzing powers of the elastic neutron and proton scattering along the periodic table from Ca to Pb calculated with the Gogny forces and the corresponding values predicted by the global phenomenological potential of Koning and Delaroche. To investigate the limits of the approximations used in this work, comparisons with the results of nucleon-nucleus elastic scattering in $^{40}$Ca and $^{48}$Ca obtained using the Nuclear Structure Model are also performed.
