Scattering of e $$^\pm $$ ± off silver atom over the energy range 1 eV–1 MeV,The European Physical Journal D

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Scattering of e $$^\pm $$ ± off silver atom over the energy range 1 eV–1 MeV
The European Physical Journal D ( IF 1.5 ) Pub Date : 2021-07-15 , DOI: 10.1140/epjd/s10053-021-00222-4
R. Hassan ₁ , Mahmudul H. Khandker ₁ , M. Atiqur R. Patoary ₁ , M. M. Haque ₁ , M. Masum Billah ₁ , A. K. F. Haque _{1,

2,

3} , M. Alfaz Uddin _{1,

4} , M. Nure Alam Abdullah ₅ , M. Shorifuddoza ₄ , Pretam K. Das ₄ , M. Maaza _{2,

3}

Affiliation

Abstract

The present work reports the calculations of the differential cross sections (DCSs) along-with the critical minima (CM) and the spin polarization or Sherman function for the scattering of electrons and positrons by atomic silver over the incident energies $1\ \hbox {eV}\ -1\ \hbox {MeV}$ using the Dirac relativistic wave equation in the framework of the optical potential model (OPM). The energy dependence of the integral elastic cross sections (IECSs), the momentum transfer cross sections (MTCSs), the viscosity cross sections (VCSs), the inelastic cross sections (INCSs), the total ionization cross sections (TICSs) and the total cross sections (TCSs) are also calculated and discussed. The predicted results are compared with the available experimental and theoretical works found in the literature. The DCSs as well as the Sherman functions and other two spin asymmetry parameters $U(\theta )$ and $T(\theta )$ are calculated at some energies for the first time in this study. Eleven critical minima in the DCSs for $e^{-}-$Ag scattering are revealed, the energy and angular positions of which are discussed. We have found 22 maximum polarization points in the vicinity of CM for $e^{-}-$Ag collision. Among these 22 points, 21 satisfy the condition of total polarization. So far as we are concerned, the present work is the first one for the calculation of CMs in the DCSs for $e^{-}-$Ag scattering.

Graphic abstract

drafts

中文翻译：

e $$^\pm $$ ± 银原子在 1 eV–1 MeV 能量范围内的散射

摘要

目前的工作报告了微分截面 (DCS) 以及临界最小值 (CM) 和自旋极化或谢尔曼函数的计算，用于原子银在入射能量$1\ \hbox {eV}\ -1\ \hbox {MeV}$在光学势模型 (OPM) 的框架中使用狄拉克相对论波动方程。积分弹性截面 (IECS)、动量传递截面 (MTCS)、粘度截面 (VCS)、非弹性截面 (INCS)、总电离截面 (TICS) 和总截面的能量依赖性部分 (TCS) 也被计算和讨论。将预测结果与文献中可用的实验和理论工作进行比较。本研究首次在某些能量下计算DCS 以及谢尔曼函数和其他两个自旋不对称参数$U(\theta )$和$T(\theta )$。DCS 中$e^{-}-$ 的11 个临界最小值揭示了银散射，讨论了其能量和角位置。我们在 CM 附近发现了 22 个最大极化点，用于$e^{-}-$ Ag 碰撞。这22个点中，有21个满足全极化条件。就我们而言，目前的工作是计算$e^{-}-$ Ag 散射的 DCS 中的 CM 的第一个工作。

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更新日期：2021-07-16

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