Coherence and partial localization in electron emission from asymmetric diatomic molecules

The presence of interference patterns in the spectra of emitted electrons from HeH⁺ molecular ions due to the impact of bare ions is analysed. It is shown that these oscillations, which are explained in terms of the coherent emission of electrons from the vicinities of the target nuclei, are preserved even after averaging over all molecular orientations. The influence of partial localization of electrons around the alpha particle center is studied. The relationship between electron ionization by ion impact and photoionization is investigated.