Anomalous elastic scattering of an x-ray photon by a molybdenum atom near the K-edge

Abstract

The differential cross section and dispersional correction for the real part of the elastic scattering amplitude of an x-ray photon by a molybdenum atom in the energy range of the ionization threshold of the 1s-shell is calculated in the non-relativistic approximation. The effect of the rearrangement of electron shells of the atomic residues in the field of the virtual 1s-vacancy is taken into account. The processes of one-photon multiple excitation/ionization of the ground state is also considered. Good agreement with the results of existing experiments is obtained.

Elastic scattering of photon by the Ne atom and the Ne6+ion

“…In our previous works we studied the scattered photon energy regions ω from 855 eV to 920 eV for the Ne atom [1] and ω from 850 eV to 1150 eV for the Ne 6+ ion [2], and in the pre-edge regions only the transitions from the 1s-shell into the mp-photoelectron states with m = 3, 4 for Ne and m from 2 to 8 for Ne 6+ were considered. As the principal result of these works (see also [7][8][9][10] for the Ar [7], Kr [8], Mo [9] and Xe [10] atoms) we obtained that accounting for the many-particle effects of radial rearrangement of the electron shells of the atomic (ionic) residue in the field of the 1s-vacancy and for stabilization of the inner-shell vacancy leads to a strong change of the absolute values and the shape of the differential cross section (1), calculated in approximation without taking into account these effects.…”