A Doublet Propensities in Ar-NO Rotationally Inelastic Scattering at 220 meV

摘要

Collisions between argon and nitric oxide were studied in crossed supersonic beams. Resonance-enhanced multiphoton ionization was used to determine postcollision relative densities of many rotational, spin-orbit, and #LAMBDA# doublet states. A double-beam reference technique was used to compensate for possible saturation in the REMPI probe. A preference for the production of the #PI#(A") #LAMBDA# doublet component was observed in both final spin-orbit states. Quantum scattering calculations on the potential surfaces of Alexander (J. Chem. Phys. 1993, 99, 7725) agree well with the #LAMBDA# doublet propensity but underestimate the observed probability for spin-orbit-changing collisions.