Elastic and total cross sections for electron scattering by nitrogen molecule in the intermediate energy range

Abstract

The Schwinger variational iterative method combined with the distorted-wave approximation is applied to the calculation of differential, integral and momentum transfer cross sections for elastic electron- scattering in the 20-800 eV energy range. In this study, a complex optical potential consisting of static, exchange, correlation-polarization plus absorption contributions, derived from a fully molecular wavefunction, is used for the electron-molecule interaction. It is shown that the introduction of absorption effects influences significantly the calculated differential cross sections in the intermediate and high incident energy range. Particularly, in the 50-300 eV range, the used model absorption potential has improved significantly the agreement between calculated results and the available experimental data.

Scattering of e± from N2 in the energy range 1 eV–10 keV

“…In this paper, the ELSEPA code [46] is used to calculate the scattering cross sections of electrons and positrons by nitrogen molecule. DCSs for electron scattering calculated over a wide range of energy (15 eV-10 keV) are compared with the experimental data [9][10][11][12] and the theoretical calculations [3,29,30,32]. DCSs for positron scattering are calculated over the energy range 10 eV-10 keV.…”

“…There are theoretical studies on e ± scattering from nitrogen molecule in the literature. Lee and Iga [29] used a complex optical potential derived from a fully molecular wavefunction within the framework of the Schwinger variational iterative method combined with the distorted-wave approximation to calculate DCS, IECS and MTCS for e − −N 2 scattering in the energy range 20-800 eV. Jain et al [3] investigated the elastic scattering of e − −N 2 in a two potential coherent approach to calculate DCS, IECS and MTCS (50-800 eV).…”

Absorption effects in electron–sulfur-dioxide collisions

“…In our calculation, the absorption effects are taken into account via the use of a complex optical potential to describe the dynamics of the e − -SO 2 interaction, whereas a combination of the iterative Schwinger variational method (ISVM) [30,31] and the distorted-wave approximation (DWA) [32,33] is used to solve the scattering equations. This procedure has been successfully applied to treat electron scattering by a number of molecules [34][35][36][37]. Although the present method is unable to calculate TICS directly, our calculated TACS provide an estimate of the contributions of all inelastic collisions, including both excitation and ionization processes.…”

Vibrational cross sections for positron scattering by nitrogen molecules

“…Within the SPC framework, the continued fractions method (MCF) [10] was applied to solve the fixed-nuclei scattering equations. The comparison of our results with the existing experimental and other calculated data is encouraging.…”