Abstract
We report in this work theoretical differential cross sections for the double ionization of oriented methane molecular subshells, namely, the 1t2 and 2a1 levels, impacted by 1keV electrons. The present calculations are provided within the first Born approximation with a target molecule described by means of a single-center wave function. A strong dependence of the fivefold differential cross sections versus the target orientation is observed in particular when the double ionization process is studied orbital by orbital. In all the kinematical conditions considered, we point out the signature of the well-known mechanisms involved in double ionization collisions.
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