Scattering of e off silver atom over the energy range 1 eV–1 MeV

R. Hassan; M. Nure Alam Abdullah; M. Shorifuddoza; Mahmudul H. Khandker; M. Atiqur R. Patoary; M. M. Haque; Pretam K. Das; M. Maaza; M. Masum Billah; A. K. F. Haque; M. Alfaz Uddin

doi:10.1140/epjd/s10053-021-00222-4

2024 Impact factor 1.5

Atomic, Molecular, Optical and Plasma Physics

Eur. Phys. J. D (2021) 75: 204
https://doi.org/10.1140/epjd/s10053-021-00222-4

Regular Article – Atomic and Molecular Collisions

Scattering of e $^{\pm}$ $^\pm$ off silver atom over the energy range 1 eV–1 MeV

R. Hassan¹, M. Nure Alam Abdullah², M. Shorifuddoza³, Mahmudul H. Khandker¹, M. Atiqur R. Patoary¹, M. M. Haque¹, Pretam K. Das³, M. Maaza⁴^,5, M. Masum Billah¹, A. K. F. Haque¹^,4^,5^k and M. Alfaz Uddin¹^,3

¹ Atomic and Molecular Physics Lab, Department of Physics, University of Rajshahi, 6205, Rajshahi, Bangladesh
² Department of Physics, Jagannath University, 1100, Dhaka, Bangladesh
³ Department of Physics, Pabna University of Science and Technology, 6600, Pabna, Bangladesh
⁴ Nanosciences African Network (NANOAFNET), Materials Research Group (MRG), iThemba LABS National Research Foundation (NRF), PO Box 722, 1 Old Faure Road, 7129, Somerset West, Western Cape Province, South Africa
⁵ UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), PO Box 392, Muckleneuk Ridge, Pretoria, South Africa

^k fhaque2001@yahoo.com, fhaque@ru.ac.bd

Received: 23 April 2021
Accepted: 5 July 2021
Published online: 15 July 2021

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 $1 eV - 1 MeV$ $1\ \hbox {eV}\ -1\ \hbox {MeV}$ 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 $U (θ)$ $U(\theta )$ and $T (θ)$ $T(\theta )$ are calculated at some energies for the first time in this study. Eleven critical minima in the DCSs for $e^{-} -$ $e^{-}-$ 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 $e^{-} -$ $e^{-}-$ 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 $e^{-} -$ $e^{-}-$ Ag scattering.