ANGULAR RESOLVED AUTOIONIZATION SPECTROSCOPY OF N-2 ON NI(110)

Angular resolved autoionization spectra after core to bound excitation of Nz adsorbed on Ni(110) are presented. The experimental autoionizat ion spectra are compared with calculated spectra for the model system Ni-N-N by application of the many-body Green's function technique usin g SCF-MO-CNDO one particle wavefunctions. The angular dependences of t he autoionization lines are explicitly calculated. The theoretical app roach allows one to assign the spectra obtained after core to bound ex citation including angular effects within the framework of molecular o rbital theory. The assignment is compared with results for the CO on N i(110) system.