منابع مشابه
Adiabatic Equation of State and Ionization Equilibrium of Dense Plasma
We consider the adiabatic equation of state for partially ionized non{ideal plasma. Plasma isentropes are calculated with the Pad e technique in the chemical picture. The interplay of ionization/dissociation equilibrium and non{ideality is investigated.
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We study hydrogen plasmas at magnetic fields B ∼ 10 − 10 G, densities ρ ∼ 10 − 10 g cm and temperatures T ∼ 10−10 K, typical of photospheres of middle-aged cooling neutron stars. We construct an analytical free energy model of the partially ionized plasma, including into consideration the decentred atomic states, which arise due to the thermal motion across the strong field. We show that these ...
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A semi-empirical equation of state has been studied for modelling vapour-liquid data of pure substances. The specific molecular based equation of state is employed here as basis because of its mathematical simplicity. The semi-empirical extension has been accomplished to real fluids by correlating the density dependence of the attraction term to vapour liquid data of a reference fluid. The resu...
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Time evolution of the ionization state of metals in the cosmic baryons is investigated in a cosmological context without the assumption of ionization equilibrium. We find that a significant fraction of ionized oxygen (Ovii and Oviii) in the warm-hot intergalactic medium (WHIM) is not in the ionization equilibrium state at a redshift of z≃ 0. We also investigate the effect on the detectability a...
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An analytical equation of state by Song and Mason is developed to calculate the PVT properties ofmercury. The equation of state is based on the statistical-mechanical perturbation theory of hard convexbodies and can be written as a fifth-order polynomial in the density. There exists three temperaturedependentparameters in the equation of state; the second virial coefficient, an effective molecu...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1961
ISSN: 0004-637X,1538-4357
DOI: 10.1086/147170