Circular dichroism in radiative and nonradiative inelastic XUV scattering

Differences in cross-sections for left and right circularly polarized light are analyzed for radiative and nonradiative inelastic scattering by randomly oriented systems. It is shown that special experimental arrangements result in finite dichroism. In radiative scattering the dichroism is related to the polarization state of the detected radiation. In the nonradiative case we show, using time-independent resonant scattering theory, that dichroism also exists for a J = 1/2 intermediate virtual hole in contrast to results based on the assumption that the formation of the hole occurs separately from the decay.