State to state collisional quenching of vibrationally excited nitric oxide(1+) (.nu.) ions

Abstract

Vibrational relaxation of NO + (υ=1,2,3) in collisions with a broad range of neutral species has been examined. REMPI is used to form state-selected NO + (υ), and a monitor ion technique is used to state selectively follow the changes in vibrational level induced by collision. The NO + (υ) ions are generated in the reaction cell of an FT-ICR spectrometer which is then used to measure the parent ion and monitor ion signals. The NO + (υ=1) quenching rate constants for collision with Ar, K, Xe, N 2 , CO 2 , CS 2 , CH 4 ,CF 4 , CHF 3 , CH 3 F, CH 3 Cl, CH 3 Br, C 2 H 4 , C 3 H 8 , and NO vary from ≤0.4×10 -10 (Ar) to 13×10 -10 cm 3 /s (C 3 H 8 )