Vibrational dependence of the NH3 (v2)+NO and NO(v)+NH3 charge transfer cross sections
Authors:
Takayuki Ebata and Richard N. Zare
Affiliation:
Department of Chemistry, Stanford University, Stanford, CA 94305, USA
Abstract:
A tandem quadrupole mass spectrometer is used to study the charge transfer reactions NH3+ + NO and NO+ + NH3 over a collision energy range 1.5–13 eV. The vibrational state of the reagent ions is selected by resonance-enhanced multiphoton ionization. For the 0.9 eV exothermic process NH3+ + NO → NH3 + NO+ excitation of the v2 umbrella bending mode (v2 = 0–12) causes no marked change in the charge transfer cross section, while in the reverse process NO+ + NH3 → NO + NH3+ excitation of the NO+ vibration (v = 0–6) strongly enhanced the charge transfer cross section.