Fully and double differential cross sections for the single ionization of H2O by bare ion impact

Abstract

A theoretical study of fully differential cross sections for the single ionization of H2O by collisions with H+, p¯ − and He2+ at an impact energy of 2 and 6 MeV amu−1 is presented. We work in terms of the Born-3DW model, which considers in the final state a model central potential to represent the interaction of the emitted electron with the molecular core. Results are presented for the lesser bound molecular orbitals (1B1, 1B2, 2A1 and 3A1). Doubly differential cross sections in terms of the electron emission angle are also presented for these molecular orbitals, showing a nearly isotropic distribution for the electron energies under consideration.