Abstract
The equation of state of partially ionized plasmas is receiving renewed attention due to recent helio- and astero-seismic measurements and laboratory experiments. The new data encompasses a wide range of parameter space, ranging from weakly to strongly coupled. Theoretical methods to treat these plasmas must confront issues concerning plasma screening of bound states, how strong coupling affects ionization balance, and how to include electron degeneracy and diffraction. Two types of methods are used to treat complicated mixtures, such as occur in stars. Chemical picture methods are based on free energy minimization and must assert the effect the plasma has on bound states. Physical picture methods view the plasma in terms of its fundamental constituents so that plasma screening arises naturally. Herein I give a brief summary of the physical picture method.
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Rogers, F.J. (2002). Equation of State of Partially-Ionized Plasmas. In: Kalman, G.J., Rommel, J.M., Blagoev, K. (eds) Strongly Coupled Coulomb Systems. Springer, Boston, MA. https://doi.org/10.1007/0-306-47086-1_3
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DOI: https://doi.org/10.1007/0-306-47086-1_3
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