Collision-induced electronic quenching of aluminum monoxide

Abstract

Pulsed laser vaporization—laser-induced fluorescence has been used to produce AlO ( ▪ 2Σ +). Electronic quenching cross-sections for AlO( ▪ 2Σ +, v′ = 1) were determined by examining fluorescence decay rates in the presence of eight atomic and diatomic collision partners. The measured electronic quenching cross-sections extend from 0.2 to 14 Å 2. Some possible molecular mechanisms rationalizing the observed quenching cross-sections are discussed.