PCI effects and the gradual formation of Rydberg series due to photoelectron recapture, in the Auger satellite lines upon Xe 4d(5/2)(-1) photoionization

摘要

The Xe (N5O2,3O2,3) Auger electron spectra originating from 4d(5/2)(-1) inner-shell photoionization were measured, with photon energy tuned close to the ionization threshold. As the photon energy approaches the threshold from above the 4d(5/2)(-1) photoionization threshold, Rydberg series structures are formed within the Auger electron peak by the recapture of the photoelectron into high-lying ion orbitals. They emerge in the tail on the higher energy side of the post-collision interaction (PCI) profile of the Auger electron. Discrete Rydberg peaks replace the continuous PCI tail and gradually form a series with intensity distribution emulating the intensity profile of the continuous tail. Structures due to the Xe(+)5p(4)(S-1(0), D-1(2), P-3(2,1,0)) ml series were observed and assigned.