Calculated low-energy electron-impact vibrational excitation cross sections for CO2 molecule

TL;DR

This paper calculates low-energy electron-impact vibrational excitation cross sections for CO2, using a resonance model and normal modes approximation, providing detailed data for multiple vibrational levels.

Contribution

It introduces a method to compute vibrational excitation cross sections of CO2 considering shape resonances and employs the local complex potential model for nuclear dynamics.

Findings

Computed resonance curves and widths for each vibrational mode.

Provided excitation data up to 10 vibrational levels.

Compared results with existing literature data.

Abstract

Vibrational-excitation cross sections of ground electronic state of carbon dioxide molecule by electron-impact through the CO2-(2\Pi) shape resonance is considered in the separation of the normal modes approximation. Resonance curves and widths are computed for each vibrational mode. The calculations assume decoupling between normal modes and employ the local complex potential model for the treatment of the nuclear dynamics, usually adopted for the electron-scattering involving diatomic molecules. Results are presented for excitation up to 10 vibrational levels in each mode and comparison with data present in the literature is discussed.