Equation of state of partially ionized argon plasma

Chen, Q. F.; Zheng, J.; Gu, Y. J.; Chen, Y. L.; Cai, L. C.
November 2011
Physics of Plasmas;Nov2011, Vol. 18 Issue 11, p112704
Academic Journal
The ionization degree, Hugoniots, and equation of state of partially ionized argon plasma were calculated by using self-consistent fluid variational theory for temperature of 6-50 kK and density of 0.05-4.0 g/cm3. The corrections of lowering of ionization energy of fluid argon caused by the interactions among all particles of Ar, Ar+, Ar2+, and e have been taken into consideration in terms of the correlation contributions to the chemical potential which is determined self-consistently by the free energy function. The initial density effects of gas argon under shock compression have been discussed. Comparison is performed with available shock-wave experiments and other theoretical calculations.


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