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Density effects on ionization equilibrium of dense hydrogen plasmas by classical monte carlo simulations

par Museux, Jean-Marc ;Bernu, Bernard;Wallenborn, Jean
Référence Europhysics letters, 25, 2, page (93-98)
Publication Publié, 1994-01

Article révisé par les pairs

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Résumé :

Ionization of dense hydrogen plasmas is studied from a chemical picture. It is based on a priori existing species: Electrons, protons and hydrogen atoms. All particles are treated as classical point particles interacting through pseudo potentials which account for quantum diffraction effects. Thermodynamics is evaluated by Monte Carlo simulations in a semigrand-canonical ensemble, a suitable method developed for charged fluids. Density effects on the ionization energy are self-consistently introduced in the model. We find that the ionization energy decreases as the density increases and that complete ionization is achieved at densities around 2 g/cm3. © 1994 IOP Publishing Ltd.