关于 26Mg 核中各种状态的非弹性库仑形式因子的短程效应占主导地位的迹象

Q4 Earth and Planetary Sciences
A. Al-Rahmani, Sanna N. Fadhil, A. Hamoudi
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引用次数: 0

摘要

研究了 26Mg 核中 C2、C3 和 C4 形因的短程效应。此外,还通过单体和双体片段簇放大与谐势单粒子波函数合作,检验了该原子核中的电荷密度分布。利用 Jastrow 形式的相关性将短程的影响嵌入到团簇放大的两个体片段中。假定 26Mg 的核拥有一个 16O 核,核子(A-16)分散在 sd 模型空间中。26Mg 核的形式因子由核极化和模型空间参与而上升。塔西模型的形式受电荷密度的影响,用于确定核极化的过渡密度。通过使用 OXBASH 程序与 Wildenthal 的通用-sd 相互作用进行壳模型计算,找到了确定 26Mg 中各种跃迁的模型空间跃迁密度所需的单体密度矩阵元素。本计算采用了分别以 和 表示的振荡器参数和相关参数。这些参数是通过拟合计算和观测到的弹性形式因子,为每个特定原子核自给自足地生成的。为了确定 26Mg 中不同激发态的电荷密度、弹性形式因子和非弹性库仑形式因子,需要和 的一个值。 这项研究表明,短程影响在当前计算中占很大优势,考虑这些影响似乎是对计算结果进行有区别的调整的必要条件,而这种调整最终会使数据在所有考虑的动量传递中都得到显著的解释。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Indications for the Substantial Predominance of Short-Range Effects on Inelastic Coulomb Form Factors for Various States in the 26Mg Nucleus
     Short-range effects on C2, C3, as well as C4 form factors in the 26Mg nucleus, were examined. The charge density distribution in this nucleus was also tested by means of one and two body fragments of cluster enlargement in cooperation with single-particle wave functions of harmonic potential. The correlation of Jastrow form was employed to inset the influence of short-range into the two body fragment of cluster enlargement. The nucleus of 26Mg was assumed to own a 16O-core with (A-16) nucleons dispersed over the sd-model space. The form factors in 26Mg nucleus ascend from the core-polarization and model space involvements. The form of Tassie model, subject to the charge density, was used to determine the transition density of core polarization. The one body density matrix elements required for determining the transition density of model space for various transitions in 26Mg were found via carrying out shell model computations using the OXBASH program with the universal-sd interaction of Wildenthal. The present calculations were subjected to the oscillator and correlation parameters symbolized by  and  respectively. These parameters are self-sufficiently generated for every specific nucleus by fitting between the calculated and observed elastic form factors. For determining the charge density, elastic form factors and inelastic Coulomb form factors for dissimilar excited states in 26Mg, one value is needed for  and  This study shows indications for the substantial predominance of short-range influences on current computations, where considering these influences look to be requisite for carrying out a distinguished adjustment in calculated results which ultimately leads to a remarkable explication of the data throughout all the considered momentum transfers.
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来源期刊
Iraqi Journal of Science
Iraqi Journal of Science Chemistry-Chemistry (all)
CiteScore
1.50
自引率
0.00%
发文量
241
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