Asymmetry and Spin Polarization Parameters of Photoelectrons from the Zn Atom

Abstract

Asymmetric and spin polarization parameters of photoelectrons from the neutral zin atom are obtained by using the relativistic random‐phase approximation (RRPA). These parameters in the energy range near the first ionization thresh old are very sensitive to valence‐core correlations. The present results are in good agreement with recent measurements.

Doubly excited states of the Be atom in the MCRRPA

“…Because of the incorporation of relativity in the MCRRPA [22,23], the double-excitation resonances in the photoionization spectrum belonging to all five Rydberg series of the Be atom are built in from the outset [14]. Applications of the MCRRPA to photoexcitation [24][25][26][27][28][29] and photoionization [14,21,[30][31][32][33][34] of atoms or ions with two valence electrons have been very successful. In this work, we shall study in detail the positions and widths of all these double-excitation resonances of the Be atom.…”

Photoionization Processes of the Single-Ionized Boron

“…The multiconfiguration relativistic random-phase approximation theory (MCRRPA) has been successfully applied to photoexcitation [16][17][18][19][20][21][22][23][24][25][26][27][28][29] and photoionization [1,8,28,[30][31][32][33][34] of divalence atomic systems. Double-excitation resonances in the photoionization spectrum reveal electroncorrelation and relativistic effects and therefore provide a stringent testing ground for the accuracy of theoretical models.…”