Vibrational excitation and dissociation of deuterium molecule by electron impact

TL;DR

This paper presents a theoretical study of electron impact processes on deuterium molecules, providing detailed vibrationally resolved cross sections relevant for fusion plasma applications.

Contribution

It introduces a comprehensive theoretical calculation of vibrational excitation and dissociation cross sections for D2, including excited states and transitions, filling gaps in existing data.

Findings

Calculated vibrationally resolved cross sections for D2

Comparison with existing literature data

Insights into electron-impact processes in fusion plasmas

Abstract

A theoretical investigation of electron-D2 resonant collisions - via the low lying and the Rydberg states of D2- - is presented for vibrational excitation, dissociative electron attachment and dissociative excitation processes by using the local-complex-potential approach. Full sets of vibrationally resolved cross sections, involving the ground electronic state - X 1{\Sigma}+g - and the first two electronic excited states - b 3{\Sigma}+u and B 1{\Sigma}+ u - of the D2 molecule, are given for fusion plasma applications in their technologically relevant partially dissociated, detached divertor regimes. In particular, transitions between electronic excited states are also considered. Comparisons are made with cross sections present in the literature, where available