Inelastic x-ray scattering in the vicinity of xenonL3edge

Abstract

A series of x-ray emission spectra of xenon in the region of ${L}_{3}{M}_{5,4}(L{\ensuremath{\alpha}}_{1,2})$ and ${L}_{3}{N}_{5,4}(L{\ensuremath{\beta}}_{2,15})$ lines were recorded along the polarization direction of the incoming photons with energies ranging from 4779.4 to $4804.4\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$. A combination of monochromatic photon beam and high resolution x-ray spectrometer resulted in the experimental broadening of $1\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$ allowing the observation of resonantly enhanced and narrowed emission lines from the decay of $[2{p}_{3∕2}]nd,ns$ states. The measured spectra are decomposed into the continuum and resonant contributions to determine their relative emission strengths and the energies of the lowest resonant excitations converging to the ${L}_{3}$ edge. The calculated differential cross section for inelastically scattered photons is compared to the measured data. Each of the resonant states is described by a single relativistic configuration in the frame of the Dirac-Fock model, and the continuum contribution to the scattered light is evaluated within the Caldwell-Zare approach, which neglects anisotropic interaction of the ejected electron with the ion.