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Title: Self-consistent variational calculation of the dense fluid helium in the region of partial ionization

Abstract

Developments in shock-wave experimental techniques have allowed Megabar pressure range in dense fluid to be probed. It has been shown that the dissociation of the molecule and ionization of the atom become operative under such ultrahigh pressures. The dense fluid helium will be ionized in high pressures and temperatures. The ionization energy of helium will be lowered due to the interactions among all particles of He, He{sup +}, He{sup 2+}, and e. The ionization degree is obtained from nonideal ionization equilibrium, taking into account the correlation contributions to the chemical potential which is determined self-consistently by the free energy function. The composition of dense helium can be calculated with given densities and temperatures. The equations of state of dense helium plasma are predicted in the density and temperature range of 0<{rho}(g/cm{sup 3})<2.0 and 3<T(eV)<7.

Authors:
; ; ; ;  [1]
  1. Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, P. O. Box 919-102, Mianyang, Sichuan (China)
Publication Date:
OSTI Identifier:
20960108
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 1; Other Information: DOI: 10.1063/1.2404670; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; EQUATIONS OF STATE; FREE ENERGY; HELIUM; HELIUM 7; HELIUM IONS; IONIZATION; PLASMA; PLASMA DENSITY; PLASMA PRESSURE; SHOCK WAVES; TEMPERATURE RANGE; VARIATIONAL METHODS

Citation Formats

Chen Qifeng, Zhang Ying, Cai Lingcang, Gu Yunjun, and Jing Fuqian. Self-consistent variational calculation of the dense fluid helium in the region of partial ionization. United States: N. p., 2007. Web. doi:10.1063/1.2404670.
Chen Qifeng, Zhang Ying, Cai Lingcang, Gu Yunjun, & Jing Fuqian. Self-consistent variational calculation of the dense fluid helium in the region of partial ionization. United States. doi:10.1063/1.2404670.
Chen Qifeng, Zhang Ying, Cai Lingcang, Gu Yunjun, and Jing Fuqian. Mon . "Self-consistent variational calculation of the dense fluid helium in the region of partial ionization". United States. doi:10.1063/1.2404670.
@article{osti_20960108,
title = {Self-consistent variational calculation of the dense fluid helium in the region of partial ionization},
author = {Chen Qifeng and Zhang Ying and Cai Lingcang and Gu Yunjun and Jing Fuqian},
abstractNote = {Developments in shock-wave experimental techniques have allowed Megabar pressure range in dense fluid to be probed. It has been shown that the dissociation of the molecule and ionization of the atom become operative under such ultrahigh pressures. The dense fluid helium will be ionized in high pressures and temperatures. The ionization energy of helium will be lowered due to the interactions among all particles of He, He{sup +}, He{sup 2+}, and e. The ionization degree is obtained from nonideal ionization equilibrium, taking into account the correlation contributions to the chemical potential which is determined self-consistently by the free energy function. The composition of dense helium can be calculated with given densities and temperatures. The equations of state of dense helium plasma are predicted in the density and temperature range of 0<{rho}(g/cm{sup 3})<2.0 and 3<T(eV)<7.},
doi = {10.1063/1.2404670},
journal = {Physics of Plasmas},
number = 1,
volume = 14,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}
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