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Basic chemical models of nonideal atomic plasma

  • Plasma Investigations
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High Temperature Aims and scope

Abstract

The concept of “basic chemical models” is introduced, which is new from the standpoint of the physics of nonideal atomic plasma. This concept is based on the requirement of full conformity of the expression for free energy in the chemical model of plasma to exact asymptotic expansions obtained in the grand canonical ensemble within the physical model of plasma. The thermodynamic functions and equations of state and ionization equilibrium are obtained for three basic chemical models differing from one another by the choice of the atomic partition function. Comparison is made with the experimental results for nonideal plasma of cesium and inert gases. It is demonstrated that the best fit to experiment is shown by the results obtained using a basic chemical model with atomic partition function in the nearest neighbor approximation with classical determination of the size of excited atom.

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Authors and Affiliations

  1. Joint Institute of High Temperatures, Russian Academy of Sciences, 125412, Moscow, Russia

    A. L. Khomkin & A. S. Shumikhin

  2. Ukrainian State Marine Technical University, Nikolaev, Ukraine

    I. A. Mulenko

Authors
  1. A. L. Khomkin
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  2. I. A. Mulenko
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  3. A. S. Shumikhin
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Additional information

Translated from Teplofizika Vysokikh Temperatur, Vol. 42, No. 6, 2004, pp. 835–842.

Original Russian Text Copyright © 2004 by A. L. Khomkin, I. A. Mulenko, and A. S. Shumikhin.

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Khomkin, A.L., Mulenko, I.A. & Shumikhin, A.S. Basic chemical models of nonideal atomic plasma. High Temp 42, 842–850 (2004). https://doi.org/10.1007/s10740-005-0026-3

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  • DOI: https://doi.org/10.1007/s10740-005-0026-3

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