X-ray scattering as a probe for warm dense mixtures and high-pressure miscibility

Abstract

We demonstrate the abilities of elastic x-ray scattering to yield information on dense matter with multiple ion species and on the microscopic mixing in dense materials. Based on partial structure factors from ab initio simulations, a novel approach for the elastic scattering feature is applied to dense hydrogen-beryllium and hydrogen-helium mixtures. The scattering signal differs significantly between single species, real microscopic mixtures, and two separate fluids in the scattering volume.

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Cited by in corpus (6)

• First principles simulations of dense hydrogen
• Ab initio results for the plasmon dispersion and damping of the warm dense electron gas
• Model-free Rayleigh weight from x-ray Thomson scattering measurements
• Reconciling ionization energies and band gaps of warm dense matter derived with ab initio simulations and average atom models
• Multi-Messenger Measurements of the Static Structure of Shock-Compressed Liquid Silicon at 100 GPa
• Quantum theory for the dynamic microstructure in correlated two-component systems far from equilibrium -- Application to x-ray scattering