Equation-of-state, critical constants, and thermodynamic properties of lithium at high energy density

Abstract

High-density lithium plasmas are expected to be generated in the Inertial Confinement Fusion (ICF) reactor chamber due to energy deposition of the prompt X-rays and ion debris in the first wall. These dense plasmas are encountered in many other applications as well.The design and optimization of such lithium-based applications requires information about the thermodynamic properties of Li fluid over a wide range of parameters including the high-energy-density regime.A model that takes into account all essential features of strongly-coupled plasmas of metal vapors is developed and used to predict the equation-of-state (EOS), critical constants, thermodynamic functions, and principal shock Hugoniot of hot dense lithium fluid.Predictions and computational results from the present model are analyzed and presented and are available in electronic form suitable for use to interested researchers and scientists.

Thermodynamics of Equilibrium Alkali Plasma. Simple and Accurate Analytical Model for Non-Trivial Case

“…and it is closely related to the previous two. It is assumed that these patterns are extending up to vapor states with extremely high temperatures [37].…”

On the Complementarity of the Harmonic Oscillator Model and the Classical Wigner–Kirkwood Corrected Partition Functions of Diatomic Molecules

“…Some studies neglect dissociation and consider only bound states at high temperatures in the rovibrational partition function because of the unrealistic (harmonic) potential energy curve [ 4 ]. Some other studies take into account anharmonicity and rovibrational coupling [ 5 , 6 ], but still do not consider unbound states [ 7 ], which are easily included in the partition function in the classical approach [ 8 , 9 , 10 , 11 , 12 , 13 ]; thermodynamical data assume the ideal-gas approach, and the unbound states’ effect is not negligible at high temperatures common in plasma science and hypersonic flows.…”