Summary
The usual approach of classical statistical mechanics is employed to describe the partial equilibrium of a chemically reacting mixture of gases. It is assumed that each constituent, has a temperature peculiar to itself and deviates from the idela-gas state. A cluster expansion is obtained in a parametric form for the equation of state of the mixture as a whole. The case of a plasma is treated by the correlation function method to arrive at an expression of the free energy, which, in turn, is exploited to give a generalized ionization condition for a multitemperature plasma.
Riassunto
Nell’ambito della statistica classica si studia l’equilibrio termico parziale di una mistura di gas chimicamente reagenti. Ciascun costituente viene considerato come gas quasi-ideale con una propria temperatura. Si ottiene uno sviluppo in serie dell’equazione di stato analogo a quello per un gas ad una data temperatura (cluster expansion). Viene trattato poi il caso del plasma con l’uso delle funzioni di correlazione. Si ricava così una espressione dell’energia libera che consente di generalizzare la condizione di equilibrio di ionizzazione in un plasma a piú temperature.
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Romeo, M. Thermodynamics of mixtures and plasmas at partial equilibrium. Nuov Cim B 105, 243–257 (1990). https://doi.org/10.1007/BF02726100
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DOI: https://doi.org/10.1007/BF02726100