The Monte Carlo data of Hansen for the internal energy of the classical one-component plasma in the fluid state is found to satisfy accurately a simple functional form, $\frac{U}{\mathrm{NkT}}=a\Gamma +b{\Gamma }^{\frac{1}{4}}+c$, for $\Gamma >1\mathrm{}$. The fluid static energy is very close to the bcc lattice energy of the solid, and the fluid thermal energy varies as $T^{\frac{3}{4}}$. Simple and accurate expressions for other thermodynamic functions for the plasma fluid are given.

• Received 23 February 1976

DOI:https://doi.org/10.1103/PhysRevA.14.1290