Electron Impact Ionization: A Study of Direct and Dissociative Cross Sections in Atoms and Molecules

Abstract

Electron impact ionization is a fundamental process in atomic and molecular physics, playing a crucial role in plasma physics, astrophysics and radiation chemistry. This study focuses on the direct and dissociative ionization cross sections of selected atoms and molecules under electron impact. Utilizing the modified Jain-Khare semi-empirical approach, this research aims to enhance the accuracy of theoretical predictions by comparing them with experimental data. Computational simulations and experimental measurements provide insight into the behavior of ionization cross sections across different energy levels. The results demonstrate significant agreement between theoretical models and experimental findings, emphasizing the importance of semi-empirical corrections in cross-section calculations. The study also discusses the implications of these findings in applied fields such as atmospheric chemistry, radiation shielding and material science.