The cross sections of the electron scattering from atoms and spin polarization has been calculated for the scattering of electrons from Mg and Ca atoms at different energies using the relativistic Dirac equation. The interest of these calculations is to obtain an information about the scattering process. The incident electron- target interaction is represented by an a potential, which is consist of a sum of real model potentials used in the solution of relativistic Dirac equation. The comparison of the results obtained by this method are very good agreement with the other available results.
This work includes the determination of the differential cross sections (DCSs), total cross sections (TCSs), and momentum transfer cross sections (MTCSs) for electron scattering by potassium atoms, as well as the derivation of the spin polarisation parameter S (). These calculations are made to describe the interaction between an electron and a target atom in the energy range (5–500 eV). Theoretical work was done by combining the static potential with the polarisation potential over large distances and the Perdew -Zunger correlation potential over short ones. "The total results show close agreement when compared to the experimental and theoretical conclusions provided by the others".
The differential cross-section (DCS) was theoretically calculated and measured with constant incident energies ranging from 10 eV to 100eV electron volts as a function of the scattering angle of 10o-150o. Dirac's relativistic equation is used to estimate the cross-sections of electron scattering and the spin polarization of electrons scattering from the silver atom. The obtained results are analyzed and compared with theoretical as well as experimental results of other research. The usefulness of this study is limited to obtaining information about scattering.
The Differential Cross Sections (DCS's), Total Cross Sections (TCS's) and Momentum Transfer Cross Sections (MTCS's) of electron and positron scattering by radium and radon atoms were calculated in the range of energy (5–500) eV using a total potential consisting of combining the static, exchange and polarization potentials at long distances. In addition, the correlation potential of Perdew–Zunger at short distances for electrons was used, as well as the correlation potential of Jain for positrons. The exchange potential for positrons was neglected. In this study, a good agreement with other experimental values and theoretical values of many investigators was found.
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