Excitation-transfer studies of n 2(a 3σ +u) with s atoms and cs molecules

Abstract

The excitation-transfer reaction N 2(A 3Σ + u) and CS molecules has been studied in a fast-flow reactor at 300 K; the excitation rate constant is (1.8 +1.7 −0.9) × 10 −11 cm 3 molecule −1 s −1. Excitation to the CS (a) state is favored over excitation to the Cs (a 1Π) state. Excitation transfer from S ( 3P) to S ( 1S) is not a facile reaction and an upper limit to the rate constant k( 1S) ≦ 4 × 10 −13 cm 3 atom −1 s −1.