Semi-empirical estimation of ion-specific cross sections in electron ionization of molecules

Partial ionization cross sections are the absolute yields of specific ions from an electron-molecule collision. They are necessary for modeling plasmas and determining the sensitivity of mass spectrometers, among other applications. They can be predicted semi-empirically when experimental data are a...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of chemical physics 2016-12, Vol.145 (22), p.224102-224102
Main Author: Irikura, Karl K.
Format: Article
Language:English
Subjects:
Electron energy
Ionization
Ionization cross sections
Mass spectrometers
Oscillator strengths
Physics
Plasmas (physics)
Spectrometers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Partial ionization cross sections are the absolute yields of specific ions from an electron-molecule collision. They are necessary for modeling plasmas and determining the sensitivity of mass spectrometers, among other applications. They can be predicted semi-empirically when experimental data are available for channel-specific oscillator strengths. However, such data are seldom available because they are obtained using specialized apparatus. Here, an alternative semi-empirical method is proposed that exploits experimental data obtained using ordinary mass spectrometers, as corrected for mass discrimination. Data are presented for an incident electron energy of 70 eV.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.4971242