Electron Interactions with Non-Linear Polyatomic Molecules and their Radicals and Ions
Abstract
The low energy electron collisions with CH4, SiH4, H2O, NH3, and GeH4 has been studied for elastic and rotational excitation channels. A parameter-free ab initio approach is employed in which electron-exchange interaction is treated exactly and the polarization effects via perturbation theory. The integro differential coupled equations are solved iteratively to yield scattering parameters. Detailed results are obtained for differential, integral, and momentum transfer cross sections. The agreement with experimental data for all the parameters is very good. The overall goal of this project is to develop state of the art computer programs and to perform calculations on various elastic and inelastic cross sections for low energy electron collisions with non linear polyatomic molecules and their ions and radicals. It is a well known fact that such a project involves a large amount of computing because of complexities involved in the dynamics of the collision system. Our main purpose is to produce a reliable set of useful cross section data for elastic as well as inelastic processes without involving any fitting procedure. When electrons interact with neutral molecular targets, time considerations of the electronic and nuclear motions allow us to treat rotational, vibrational, and electronic processes rather independently.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1991
- Accession Number
- ADA246492
Entities
People
- Ashok K. Jain
Organizations
- Florida A&M University