Many-Electron Effects in Photoionisation

Experimental high resolution study of the photoproduction of Ne+3p satellites in the threshold energy range

“…The simultaneous photoionization and excitation of atoms is a two-electron process which is generally weak when compared to one-electron processes. It is a process beyond the model of independent electrons and a testing ground for higher order mechanism [1]. The simultaneous excitation of two electrons belongs to the same class of processes.…”

“…when autoionization of doubly excited states is the dominating mechanism to produce singly charged excited ions as is the case for the photoproduction of excited rare gas ions in the threshold range of their valence electrons [2-4, and references therein]. A large number of series of doubly excited Rydberg states can be excited due to the three LS-coupled states 3 P, 1 D, 1 S of the open mp 4 shell of the ion core [5][6][7]. Correspondingly, a complex resonance enhancement of the satellite production results [2][3][4].…”