Coherence and partial localization in electron emission from HeH+ molecular ions.

C. TACHINO; M.E. GALASSI; F. MARTIN; R. RIVAROLA

Sendai

Conferencia; International conference on many particle spectroscopy of atoms, molecules, clusters and surfaces (MPS 2010).; 2010

The presence of interference patterns in doubly differential cross sections is investigated forsingle electron ionization of a heteronuclear system, the HeH+ molecular ion, produced by highly energetic protons. These interferences, which are due to coherent electron emissionfrom the vicinity of the target nuclei, are preserved even after averaging over all molecular orientations. However, when compared with the homonuclear H2 target case, the effect appears to be less pronounced due to the partial localization of the target electrons around the alphaparticle centre. Similarities and differences with the case of photon beams are also discussed.