Australian Journal of Physics Australian Journal of Physics Society
A journal for the publication of original research in all branches of physics

Statistical Thermodynamics of Nonideal Plasma

HE Wilhelm and AH Khalfaoui

Australian Journal of Physics 35(4) 425 - 440
Published: 1982


Based on the Debye model, the free energy of a nonideal electron-ion plasma is calculated for interaction parameters 0 < Y < Ye below the critical solid state value Ye (y = Ze2n1/ 3/KTis the ratio of mean Coulomb interaction energy to thermal energy), which takes into account the energy eigenvalues of (i) the thermal translational particle motions, (ii) the random collective electron and ion motions, and (iii) the static Coulomb interaction energy of the electrons and ions in their oscillatory equilibrium positions. From this physical model, the interaction part of the free energy is derived, which consists of a quasi-lattice energy, depending on the interaction parameter Y, and the free energies of the quantized electron and ion oscillations (long-range interactions).

© CSIRO 1982

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