Theory of inner-shell photoionization of fixed-in-space molecules - art. no. 062707

A theory is presented for the calculation of molecular inner-shell photoion ization near thresholds and electron-molecular-ion elastic scattering. The interaction of the incoming/outgoing electron with each atom of the formati on (except for the ionized atom) is accounted for by suitable boundary cond itions imposed on the electron wave function at nuclei of these atoms in th e system. The theory is applied to calculations of the form of the photoele ctron angular distribution for 1s photoionization of the C atom in the CO d iatomic molecule, as well as for the photoelectron angular distribution due to photodetachment from a quasimolecular negative ion consisting of a C- i on located near a neutral O atom.