B-spline R-matrix-with-pseudostates calculations for electron-impact excitation and ionization of oxygen

A systematic study of angle-integrated cross sections for electron scattering from neutral oxygen is presented. The calculations cover ionization, elastic scattering and excitation of the first 21 states of oxygen with configurations 2s¹2p⁴ and 2s²2p¹nl (n=3-5, l=0-3). The sensitivity of the results is checked by comparing data obtained in different approximations, including a large-scale model with over 1100 continuum pseudostates. (paper)