Abstract

This paper reports experimental and theoretical results for the influence of optical target preparation on electron transfer for the collision system at a proton impact energy of 2 keV. The spatial pattern of the forwardly scattered neutrals is found to depend sensitively on initial optical target preparation as well as on the energy defect of the process. The complete set of density matrix parameters has been determined for the channels corresponding to electron transfer into and . The results reveal opposite state propensities for initial target preparation for the quasi-resonant and the endoergic exit channels. The overall agreement is good between experimental observations and theoretical predictions based on the coupled-channel impact parameter method using a 36-state atomic basis.

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