Low-energy collisions between electrons and BeH$^+$: cross sections and rate coefficients for all the vibrational states of the ion

TL;DR

This paper provides detailed cross sections and rate coefficients for electron collisions with BeH+ ions across all vibrational states, aiding plasma modeling in fusion devices like ITER and JET.

Contribution

It introduces a comprehensive set of quantum defect theory-based data for all vibrational levels of BeH+ ions, including analytical fits for practical use.

Findings

Data covers all 18 vibrational levels of BeH+

Includes cross sections and rate coefficients for dissociative recombination and vibrational transitions

Results are presented graphically and as analytical functions

Abstract

We provide cross sections and Maxwell rate coefficients for reactive collisions of slow electrons with BeH$^+$ ions on all the eighteen vibrational levels ($X{^{1}\Sigma^{+}},v_{i}^{+}=0,1,2,\dots,17$) using a Multichannel Quantum Defect Theory (MQDT) - type approach. These data on dissociative recombination, vibrational excitation and vibrational de-excitation are relevant for magnetic confinement fusion edge plasma modelling and spectroscopy, in devices with beryllium based main chamber materials, such as the International Thermonuclear Experimental Reactor (ITER) and the Joint European Torus (JET). Our results are presented in graphical form and as fitted analytical functions, the parameters of which are organized in tables.