Abstract
In the present experimental work we have investigated multi-electron transfer processes inIq+ (q = 10, 15, 20 and 25)+ Ne, Ar, Kr andXe collisions at 1.5q keV energy. Using the coincidence technique between charge-selected projectile and recoilions, the branching ratios between Auger and radiative decay channels have beenmeasured in decay processes of multiply excited states formed by multi-electrontransfer collisions. By combining these ratios with the measured absolute crosssections for total and single electron transfer processes, the partial cross sections forvarious charge changing processes have been determined. It has been shown that,in all the multi-electron transfer processes investigated, the Auger decays arefar dominant over the radiative decay processes and the branching ratios areclearly characterized by the average principal quantum number of the initial excited states of projectile ions, estimated from the extendedclassical-over-barrier-model (ECBM). We could express the branching ratios in highRydberg states formed in multi-electron transfer processes by using the decay probabilityof one Auger electron emission.
Published Version
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