Ab Initio Simulations of Dense Helium Plasmas
Materials Science
2011-06-27 v2 Earth and Planetary Astrophysics
Plasma Physics
Abstract
We study the thermophysical properties of dense helium plasmas by using quantum molecular dynamics and orbital-free molecular dynamics simulations, where densities are considered from 400 to 800 g/cm and temperatures up to 800 eV. Results are presented for the equation of state. From the Kubo-Greenwood formula, we derive the electrical conductivity and electronic thermal conductivity. In particular, with the increase in temperature, we discuss the change in the Lorenz number, which indicates a transition from strong coupling and degenerate state to moderate coupling and partial degeneracy regime for dense helium.
Cite
@article{arxiv.1012.0157,
title = {Ab Initio Simulations of Dense Helium Plasmas},
author = {Cong Wang and Xian-Tu He and Ping Zhang},
journal= {arXiv preprint arXiv:1012.0157},
year = {2011}
}
Comments
4 PRL pages, 3 figures