Ion—Molecule Reactions in Gaseous Ammonia

Abstract

Ion—molecule reactions in gaseous ammonia have been studied up to 0.065 Torr in the ion source of the mass spectrometer. Besides the primary ions NH3+, NH2+, NH+, N+, the following secondary ions NH4+, N2H5+, N2H4+, N2H3+, N2H2+, and N2H+ have been observed. Appearance-potential data and pressure-dependence studies have allowed the parent—daughter relationship and the cross sections of the pertinent reactions to be determined.