Molecular photoionization cross sections and asymmetry parameters by L2 basis functions calculations: H2O

Abstract

A K‐matrix technique using a basis set of square‐integrable functions is applied to the calculation of differential photoionization cross sections in molecules. Continuum orbitals are variationally determined in the static‐exchange approximation of the ion field. Integrated photoionization cross sections and asymmetry parameters β of the three main valence ionization processes in H₂O are calculated, in the independent channel approximation, for the photon energy in the range of 14–50 eV and compared with the available experimental data.