X-ray Thomson scattering absolute intensity from the f-sum rule in the imaginary-time domain
Tobias Dornheim, T. Döppner, Andrew Baczewski, P. Tolias, Maximilian Böhme, Zhandos A. Moldabekov, Th. Gawne, D. Ranjan, D. A. Chapman, M. J. MacDonald, Th. R. Preston, D. Kraus, Jan Vorberger
Abstract
We present a formally exact and simulation-free approach for the normalization of X-ray Thomson scattering (XRTS) spectra based on the f-sum rule of the imaginary-time correlation function (ITCF). Our method works for any degree of collectivity, over a broad range of temperatures, and is applicable even in nonequilibrium situations. In addition to giving us model-free access to electronic correlations, this new approach opens up the intriguing possibility to extract a plethora of physical properties from the ITCF based on XRTS experiments.
Topics & Concepts
Intensity (physics)The ImaginaryAbsolute (philosophy)ScatteringPhysicsDomain (mathematical analysis)MathematicsOpticsMathematical analysisPhilosophyPsychologyEpistemologyPsychotherapistCrystallography and Radiation PhenomenaHigh-pressure geophysics and materialsX-ray Diffraction in Crystallography