Partial localization in coherent electron emission from asymmetric diatomic molecules

摘要

The presence of interference patterns in doubly differential cross sections is investigated for single electron ionization of a heteronuclear system, the HeH~+ molecular ion, produced by highly energetic protons. These interferences, which are due to coherent electron emission from the vicinity of the target nuclei, are preserved even after averaging over all molecular orientations. However, when compared with the homonuclear H_2 target case, the effect appears to be less pronounced due to the partial localization of the target electrons around the alpha particle centre. Similarities and differences with the case of photon beams are also discussed.