Thomson scattering in the average-atom approximation

Abstract

The average-atom model is applied to study Thomson scattering of x-rays from warm-dense matter with emphasis on scattering by bound electrons. Parameters needed to evaluate the dynamic structure function (chemical potential, average ionic charge, free electron density, bound and continuum wave-functions and occupation numbers) are obtained from the average-atom model. The resulting analysis provides a relatively simple diagnostic for use in connection with x-ray scattering measurements. Applications are given to dense hydrogen, beryllium, aluminum and titanium plasmas. In the case of titanium, bound states are predicted to modify the spectrum significantly.

9 pages, 9 figures

Cited by in corpus (11)

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• First principles simulations of dense hydrogen
• Quantum-mechanical calculation of ionization potential lowering in dense plasmas
• Improving dynamic collision frequencies: impacts on dynamic structure factors and stopping powers in warm dense matter
• Model-free Rayleigh weight from x-ray Thomson scattering measurements
• Theoretical Treatments of the Bound-Free Contribution and Experimental Best Practice in X-ray Thomson Scattering from Warm Dense Matter
• First-principles derivation and properties of density-functional average-atom models
• Average-atom treatment of relaxation time in X-ray Thomson scattering from warm-dense matter
• The effect of bound states on X-ray Thomson scattering for partially ionized plasmas
• X-ray Thomson scattering for partially ionized plasmas including the effect of bound levels
• Imaging atomic scattering potential in centroidal diffraction of elastic electrons