Investigation of warm dense matter using time-resolved X-ray absorption spectroscopy with third- and fourth- generation light sources

Ab initio calculation of X-ray and related core-level spectroscopies: Green's function approaches

“…Recent interest and advances in the time resolution of pump-probe experiments has led to X-ray absorption probes of systems out of equilibrium and at very high electronic temperatures, up to the warm-dense-matter regime. 6,62–65 In order to simulate XAS at finite temperatures, both the temperature dependence of the lattice and that of the electronic system must be treated. While the previous section discussed an approach for treating the lattice temperature, here we provide details about our RSMS treatment of finite electronic temperature in X-ray spectra.…”