Steric effects and quantum interference in the inelastic scattering of NO(X) + Ar

摘要: Rotationally inelastic collisions of NO(X) with Ar are investigated in unprecedented detail using state-to-state, crossed molecular beam experiments. The molecules selected the Ω = 0.5, j f state and then oriented such that either ‘N’ or ‘O’ end molecule is directed towards incoming atom. Velocity map ion imaging used to probe scattered NO well-defined quantum states. We show fully state-resolved differential steric asymmetry, which quantifies how relative efficiency for scattering off ends varies angle, strongly affected by interference. Significant changes both integral cross sections found depending on whether occur N O molecule. results well accounted rigorous mechanical calculations, contrast classical trajectory calculations more simplistic models provide, at best, an incomplete picture dynamics.