Electron impact ionisation of H2O, CO, CO2and CH4

Abstract
Utilising a crossed electron-beam-molecular-beam collision geometry and the relative flow technique normalised values of total and partial ionisation cross sections for H2O, CO, CO2 and CH4 have been measured. The present total ionisation cross sections agree well with those reported previously by Rapp and co-workers (1965). However, data on the partial ionisation cross sections widely disagree with some previous results.