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We construct the velocity map images of the proton transfer reaction betweenhelium and molecular hydrogen ions H2+. We perform simulations of imagingexperiments at one representative total collision energy taking into accountthe inherent aberrations of the velocity mapping in order to explore thefeasibility of direct comparisons between theory and future experiments plannedin our laboratory. The asymptotic angular distributions of the fragments in a3D velocity space is determined from the quantum state-to-state differentialreactive cross sections and reaction probabilities which are computed by usingthe time-independent coupled channel hyperspherical coordinate method. Thecalculations employ an earlier ab initio potential energy surface computed atthe FCI/cc-pVQZ level of theory. The present simulations indicate that theplanned experiments would be selective enough to differentiate between productdistributions resulting from different initial internal states of thereactants.

The H$_2$$^+$ + He proton transfer reaction: quantum reactive differential cross sections linked with velocity mappings