Pseudopotential Method for Inelastic Processes in Atoms and Molecules. II. Photoionization ofN2

The pseudopotential method developed in Paper I is applied to the photoionization of ${\mathrm{N}}_2$. From the known quantum defects of two Rydberg series of ${\mathrm{N}}_2$, we obtain the phase shifts of the photoionized electron. These phase shifts are used to construct a simple model potential approximation to the true pseudopotential. The model wave functions are then orthogonalized to the known Hartree-Fock wave functions of the ${\mathrm{N}}_2^{+}$ core. Using these wave functions we calculate the total and differential cross section for photoionization of electrons from ${\mathrm{N}}_2$ as a function of the energy of the outgoing electron. The results of the calculation are discussed and compared with some of the more recent experimental measurements of the aforementioned quantities.