منابع مشابه
Structural properties of warm dense matter
We investigate the structure in warm dense matter by ab initio simulations and classical fluid equations. This comparison yields valuable information on the system properties such as effective ion-ion interactions and charge states. Extensions to systems with multiple ion species are discussed and the limits of reduced descriptions are demonstrated. The structural information is then used to pr...
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Orbital-free molecular dynamics is used to perform calculations for aluminum in the warm dense matter regime. The dynamic structure factor obtained from the orbital-free calculations are compared with the dynamic structure factor obtained from pseudo-atom molecular dynamics calculations. These comparisons are made at 5, 20, and 50 eV for wavenumbers that span the single particle, generalized hy...
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A classical Molecular Dynamics code has been developed to simulate dense plasmas i.e. neutral systems of interacting ions and electrons. Our goal is to design a tool that relies on a reduced set of microscopic mechanisms in order to obtain solutions of complex time dependent n-body problems and to allow an efficient description of the plasma states between classical high temperature systems to ...
متن کاملThomson Scattering in Warm Dense Matter
The scattering of photons in plasmas is an important diagnostic tool. The region of warm dense matter can be probed by x-ray Thomson scattering. The scattering cross section is related to the dynamic structure factor S(k, ω). We focus on the contribution of free electrons to the dielectric function which is calculated in the Born–Mermin approximation. The inclusion of collisions modifies the dy...
متن کاملThomson Scattering from Warm Dense Matter
The dynamic structure function for Thomson scattering of x-rays by warm dense matter is evaluated within the average-atom framework. Contributions to the dynamic-structure function from elastic scattering by ions and from inelastic scattering by free and bound electrons are considered. Each contribution is evaluated using input parameters obtained from the averageatom model. Bound-state feature...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2010
ISSN: 1742-6596
DOI: 10.1088/1742-6596/220/1/012001