The calculations of thermophysical properties of low-temperature gallium plasma

Abstract

We have developed a model for the calculation of the thermophysical properties (pressure, internal energy, conductivity, thermal conductivity, and thermal power) and the chemical composition of gallium plasma at temperatures 10–100 kK and densities less than 6 g/cm3. In this area, there have not been any published data on the considered properties for gallium plasma until now. The model was constructed on the basis of the chemical approach and relaxation time approximation. We have also estimated the region of applicability of the model due to the used approximations.

A preliminary assessment of the sensitivity of uniaxially-driven fusion targets to flux-limited thermal conduction modeling

“…In these simulations we use the well-known Lee-More 53 and Stanton-Murillo 54 models for the conductivities of the electrons and ions, respectively. The Lee-More model is corrected to include electronelectron scattering following the approach of Apfelbaum 55 . For the electron-ion energy exchange rate we use the f -sum rule approach 56,57 , which been shown to perform well compared to molecular dynamics simulations 58 .…”

Calculations of the thermophysical properties of low‐temperature Pb plasma at low densities

“…The dimers, as well as more complicated clusters, no longer exist at temperatures studied here, analogously to the cases of many other metals. [31] But the atom-atom interaction can be still important [34,35] and it has been included into consideration. The interaction between neutral and charged N − Ch components and between only charge components Ch − Ch were also accounted for.…”

“…Here we only remark that the chemical approach is also widely used for the calculations of various properties of plasma of different substances. [1,5,[25][26][27][28][29][30][31][32][33][34][35] It originates from the physics of weakly coupled plasma. So corresponding models are fitted better for relatively low densities, and they can have limitations for their area of applicability by the density mentioned earlier in dependence of T. The corresponding estimates for Pb plasma are presented in ref.…”