Abstract

Relative differential cross sections are presented for the collisional excitation of K(4 2P) by He, Ne, Ar, Kr and Xe. The inelastic process is identified by measuring the time correlation between the scattered alkali atom and the emitted photon in a particle-photon coincidence experiment. The measured cross sections are used to identify the curve crossings responsible for the excitation process and to derive the excitation probability as a function of impact parameter.

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