HIGH-PRESSURE INVESTIGATION OF ION-MOLECULE REACTIONS IN MIXTURES OF AMMONIA AND ARGON, AND PURE AMMONIA

The results of an investigation of ion/molecule reactions in gaseous m ixtures of ammonia and argon, and pure ammonia are presented. Relative values of the ion currents for observed ions were determined as a fun ction of the gas pressure in the ion source collision chamber, and of the concentration of ammonia in the mixture. The reaction rate constan ts for NH3+, NH2+ and NH+ ions in pure ammonia were determined. Measur ements were performed using a mass spectrometer with the high pressure ion source constructed by the authors.