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Nucleon scattering analysis with a lane-consistent dispersive optical potential for Hf, W and Ta isotopes
Journal of Physics G: Nuclear and Particle Physics ( IF 3.5 ) Pub Date : 2021-05-20 , DOI: 10.1088/1361-6471/abe280
Xiuniao Zhao 1 , Weili Sun 1 , E Sh Soukhovitskiĩ 2 , D S Martyanov 2 , J M Quesada 3 , R Capote 4
Affiliation  

Nucleon scattering on tungsten and neighboring nuclei are analyzed with a coupled-channels method based on a soft-rotator structure model. The multiple band couplings and nuclear stretching factors are built using nuclear wave functions of the soft-rotator model with the Hamiltonian parameters adjusted to reproduce the energy of low-lying collective levels of corresponding nuclei. A regional lane-consistent dispersive coupled-channels optical-model potential is derived to reproduce the neutron total cross sections, nucleon elastic and inelastic scattering angular distributions, and analyzing powers. Excellent agreement with measurements is obtained for neutron total cross sections of 182,183,184,186W, 178Hf, and 181Ta targets in the whole energy range from 100 keV to 200 MeV; other scattering data are found to be in good agreement with measurements. A deformation-dependent nuclear radius correction arising from the volume conservation condition is introduced and allowed to remove phenomenological radii dependencies on nuclear mass from the potential geometry.



中文翻译:

对 Hf、W 和 Ta 同位素具有泳道一致色散光学势的核子散射分析

使用基于软旋转器结构模型的耦合通道方法分析钨和相邻原子核上的核子散射。使用软旋转器模型的核波函数构建多频带耦合和核拉伸因子,并调整哈密顿参数以再现相应核的低位集体能级的能量。推导出区域一致的色散耦合通道光学模型潜力,以再现中子总截面、核子弹性和非弹性散射角分布以及分析能力。中子总截面为182,183,184,186 W、178 Hf 和181Ta靶在100 keV到200 MeV的整个能量范围内;发现其他散射数据与测量结果非常吻合。引入了由体积守恒条件引起的变形相关核半径校正,并允许从潜在几何形状中去除现象学半径对核质量的依赖性。

更新日期:2021-05-20
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