Single- and double-ionization processes of antiproton-helium and antiproton–molecular hydrogen collisions in the keV energy range
Abstract
We report on a newly developed ab initio model to describe single and double ionization processes in antiproton collisions with atoms and molecules. Our model is based on a fully correlated closecoupling approach and a Dyson orbital analysis. Furthermore, we employ the concept of correlation integral in order to quantify and gain insights into the effects of electronic correlation on the ionization processes. Our model is applied to the prototype antiproton-helium and antiprotonmolecular hydrogen collision systems in the keV energy range.
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