ENERGY-DEPENDENCE OF 3D, 4D, 5D, AND 4F PHOTO-IONIZATION 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. © 1979 The American Physical Society.