Theoretical grounds for coincidence measurements in autoionization studies

Abstract
(e,2e), (e,e'γ) and (e,2eγ) coincidence measurements on ionization of He atom via excitation and decay of (3ln'l') autoionizing states above the n=2 threshold are considered theoretically. General regularities of alignment transfer from atomic autoionizing states to excited states of the residual ion are shown under condition of strong interference between resonant and direct ionization processes.