Absolute cross-sections of fragment negative ions in electron collisions with difluoromethane
Atomic and Molecular Clusters
2020-11-11 v1
Abstract
Dissociative electron attachment (DEA) and ion-pair dissociation (IPD) processes of Difluoromethane (CHF) have been studied in the incident electron energy range 0 to 45 eV. Three different fragment anions (F, CHF and F) are detected in the DEA range and two anions (F and CHF) are detected in IPD range. Absolute cross-section of the F fragment ion is measured for the first time. Three different resonances for both F and CHF ions and one single resonance peak for the F ions are observed. Constant increase in ion counts above 8 eV incident electron energy indicates the involvement of IPD process. From the experimental observation, it is speculated that near 11 eV incident electron energy both DEA and IPD processes occur simultaneously.
Keywords
Cite
@article{arxiv.1806.09352,
title = {Absolute cross-sections of fragment negative ions in electron collisions with difluoromethane},
author = {Dipayan Chakraborty and Dhananjay Nandi},
journal= {arXiv preprint arXiv:1806.09352},
year = {2020}
}