Energy disposal in charge transfer reactions producing NH+.3: Dependence of the NH+.3+H2O reaction on NH+.3 internal energy

Abstract

The division of available energy between translational and internal modes has been determined for seven charge transfer reactions which produce NH+.3. The charge transfer reagent ions studied were Ar+., Kr+., Xe+., N+.2, O+.2, CO+., and CO+.2. The average kinetic energy released in the reaction was measured directly using an ion cyclotron resonance (ICR) technique. The internal energy deposited in the NH+.3 product was determined by further reacting the NH+.3 product with H2O in a tandem ICR spectrometer. The product distribution of this subsequent reaction is shown to depend strongly on the NH+.3 internal energy; and this dependence is quantitatively determined. The energy deposited in the neutral charge transfer product is calculated using energy balance. Comparisons are made between charge transfer reagent ions of similar recombination energies to show the effects of reagent ion internal modes on the division of available reaction energy.