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Study of giant dipole resonances for neodymium isotopes with an exciton model
International Journal of Modern Physics E ( IF 1.1 ) Pub Date : 2020-10-17 , DOI: 10.1142/s0218301320500846
Nabeel F. Lattoofi 1 , Ali A. Alzubadi 2
Affiliation  

The partial photonuclear [Formula: see text], pn) and [Formula: see text] and the total photonuclear cross-sections (the giant dipole resonance (GDR)) have been investigated theoretically for neodymium isotopes, namely [Formula: see text]Nd, using framework of the EMPIRE 3.2.2 code. The energy, width and cross-section parameters of the GDR used in our calculations have been investigated in this paper depending on the deformation parameters of nuclei. The calculated results have been compared with the experimental data and with those calculated using Lorentzian fitting parameters. Our calculations show a good agreement for all isotopes under study and give better results than the results calculated with Lorentzian parameters. Furthermore, the neutron number dependence of the total and partial photonuclear cross-sections has also been discussed. The results appear that the EMPIRE code used is a perfect tool for reproducing the splitting in the GDR for deformed [Formula: see text]Nd isotope in two distinct dipole modes which are perfectly consistent with the experimental results. It has also been shown that the present parameters are suitable parameters for reproducing the GDR for spherical, or nearly spherical, and the deformed ([Formula: see text]Nd) neodymium isotopes. The parameters have been indicating the small deformation in [Formula: see text]Nd, which cannot be shown by the Lorentzian fitting parameters.

中文翻译:

用激子模型研究钕同位素的巨偶极共振

理论研究了钕同位素的部分光核[公式:见正文],pn)和[公式:见正文]和总光核截面(巨偶极共振(GDR)),即[公式:见正文] Nd,使用 EMPIRE 3.2.2 代码的框架。本文根据原子核的变形参数研究了我们计算中使用的 GDR 的能量、宽度和横截面参数。计算结果与实验数据和使用洛伦兹拟合参数计算的结果进行了比较。我们的计算表明,所有研究中的同位素都具有良好的一致性,并给出了比使用洛伦兹参数计算的结果更好的结果。此外,还讨论了总和部分光核横截面的中子数依赖性。结果显示,所使用的 EMPIRE 代码是再现 GDR 中变形的 [公式:见正文]Nd 同位素在两种不同偶极模式下的分裂的完美工具,这与实验结果完全一致。还表明,本参数适用于再现球形或近似球形的 GDR 以及变形的([公式:参见文本]Nd)钕同位素。[公式:见正文]Nd中的参数一直表示小变形,洛伦兹拟合参数无法显示。还表明,本参数适用于再现球形或近似球形的 GDR 以及变形的([公式:参见文本]Nd)钕同位素。[公式:见正文]Nd中的参数一直表示小变形,洛伦兹拟合参数无法显示。还表明,本参数适用于再现球形或近似球形的 GDR 以及变形的([公式:参见文本]Nd)钕同位素。[公式:见正文]Nd中的参数一直表示小变形,洛伦兹拟合参数无法显示。
更新日期:2020-10-17
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