Electron correlations and spin effects activated by excitation of an inner 3d electron in zinc

Excitation of the 4s4p3P0,1,2 states of zinc was studied in the energy region of the lowest 3d-1 autoionizing state using spin polarized incident electrons. The energy dependence of angular differential excitation intensities was measured for incident electrons with spin up and down. Negative ion resonances with a 3d94s24p2 electron configuration show prominent structure in the angular differential cross section and also show significant spin dependence which is prominent especially at 900.