Energy dependence of3d,4d,5d, and4fphotoionization partial cross sections

The photoionization partial cross sections of the Ga $3d$, As $3d$, Sb $4d$, Pb $5d$, Au $5d$, and Au $4f$ subshells have been mapped out from threshold and up to a few hundred eV above threshold by means of the photoemission technique. The experiments were performed on solids using synchrotron radiation, in the photon energy range 40-700 eV, as an excitation source. Atomic partial photoionization cross sections were calculated using the Herman-Skillman central-potential model (HS approximation). The calculated energy dependence for the atomic case is compared to the experimentally determined energy dependence in the solid phase.