Exploring variations in dynamic collision frequencies

In a steady (zero-frequency) electric field, electron-ion collision frequencies inform the conductivity of materials and line shapes in the warm and hot dense matter regimes. Oscillating fields introduce dynamic effects that modify the collision frequencies, affecting absorption and scattering signatures of plasmas. Here, we explore how changes to scattering cross sections, densities of states, ion structure factors, integration methods, and inelastic processes modify the dynamic collision frequencies and associated observables such as the damping of plasmons in X-ray Thomson Scattering spectra.