title: 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.
authors.affiliation: Department of Physics, 225 Nieuwland Science Hall University of Notre Dame, Notre Dame, Indiana 46556, USA. johnson@nd.edu
authors.forename: W R
authors.initials: WR
authors.lastname: Johnson
authors.forename: J
authors.initials: J
authors.lastname: Nilsen
authors.forename: K T
authors.initials: KT
authors.lastname: Cheng
mesh_terms: D003198:Computer Simulation; D008956:Models, Chemical; D058626:Plasma Gases / Q000737:chemistry*; D012542:Scattering, Radiation; D014965:X-Rays
chemical_list: D058626:Plasma Gases