Abstract
We report on the formation and dissociation of the multiply charged carbonyl sulfide (OCS) molecular ions, OCSq + (where q = 1–4), formed in the collision of neutral OCS molecules with 150 keV Ar+ projectiles, detected using coincidence techniques. From the coincidence map of the fragments we have separated complete two- and three-body dissociation channels resulting in various ionic fragments. Comparing the slope of the coincidence islands with theoretical values, determined from the charge and momentum distribution of the correlated particles, we postulate different decay modes behind each of the fragmentation channels. We also discuss momentum imaging and the kinetic energy release of each of the dissociation channels of OCSq +, which give further information about the momentum balance and the geometry of the precursors in OCS fragmentation.
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