Abstract
Angular distributions of ejected electrons from the mpnd autoionizing states in the alkaline-earth atoms ( m = 3 to 6 for Mg, Ca, Sr and Ba atoms) have been investigated. Starting from the most general theory of photoexcitation, we have carried out specific analytic expressions in terms of the reduced dipole matrix elements for various angular distributions corresponding to different ion-core states. The properties of the symmetry parameters which characterize the angular distribution are studied in detail. Manifestations involved in both total and differential cross sections of photoionization are interpreted.
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