Ion—Molecule Reactions in Methane and in Ethane

Abstract

Ion—molecule reactions in methane, in methane—methane‐d₄ mixture, and in ethane have been studied up to a pressure of 0.08 Torr in the ion source of the mass spectrometer. Ionization‐efficiency curves, appearance potentials, and pressure‐dependence studies have allowed the parent—daughter ion relationship and the cross sections of the pertinent reactions to be determined.