Experimental study of state-to-state rates for elementary inelastic collision processes involving He, H2, and H2O species

Abstract

State-to-state (sts) rates for pH2:pH2, pH2:oH2, and oH2:oH2 inelastic collisions in the 10<T<330 K thermal range have been obtained in the laboratory using an improved methodology based on supersonc jets. These sts-rates provide the basis for systematic studies of H2 jets seeded with H2O capable of providing information on sts-rates for H2O:H2 collsions in the low temperature thermal end. Preliminar results will be reported, together with comparisons with the H2O:He collision system.