Astrophysical applications of quantum corrections to the equation of state of a plasma

1994 ◽  
Vol 49 (2) ◽  
pp. 611-617 ◽  
Author(s):  
Andrew F. Heckler
Keyword(s):  
Equation Of State ◽  
Quantum Corrections

scholarly journals Equation of State and Ionization of Dense Plasmas

1990 ◽  
Vol 121 ◽  
pp. 43-58
Author(s):  
W. Ebeling
Keyword(s):  
Phase Transitions ◽  
Equation Of State ◽  
Quantum Statistics ◽  
Quantum Corrections ◽  
Ionization Equilibrium ◽  
Dense Plasmas ◽  
Equilibrium And Kinetics ◽  
Level Shifts ◽  
Main Effects ◽  
The Ideal

AbstractIn large regions of densities and temperatures the properties of plasmas are influenced by Coulombic forces. Here especially hydrogen and helium plasmas are studied. The region of nonideality is given and the main effects as screening, quantum corrections, level shifts and the cut off for the sum over states are discussed. Based on methods of classical and quantum statistics corrections to the ideal EOS are calculated. Interpolational expressions covering the whole density-temperature plane are given and phase transitions to highly ionized states are discussed. Level shifts due to nonideality are derived. Finally the ionization equilibrium and kinetics are considered theoretically focussing the attention on nonideality effects.

Simulations of H–He mixtures using the van der Waals density functional

2018 ◽  
Vol 84 (4) ◽  
Author(s):  
Manuel Schöttler ◽  
Ronald Redmer
Keyword(s):  
Equation Of State ◽  
Density Functional ◽  
Van Der Waals ◽  
Enthalpy Of Mixing ◽  
Quantum Corrections ◽  
Free Enthalpy ◽  
Functional Theory ◽  
State Data ◽  
New Equation ◽  
Dynamics Simulations

We show results on the high-pressure equation of state of hydrogen–helium mixtures obtained from finite-temperature density functional theory molecular dynamics simulations using the van der Waals density functional. We discuss the calculation of non-ideal entropies based on different methods and show how nuclear quantum corrections influence the free enthalpy of mixing. Furthermore, we calculate a Saturn isentrope based on our new equation of state data.

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