The State Equations of Plasma Produced by Pulse Discharge in Water

The temperature of plasma produced by pulse discharge in water (PPDW) is about 2104 K to 5104 K, and the max pressure of PPDW reaches 1～10 GPa. So the PPDW should not be treated as an ideal gas. In this work, the corrections to the ionization potentials in an equilibrium equation of PPDW, and the pressure from the degeneracy of electrons, the effect among charged particles and perturbations of energy eigenvalue of atoms were calculated. The calculation results show that: (1) When the total density n of H, O, H+, O+ and O2+ is about 1029 m-3, the electron density, ne increases by about 70% considering the correction of ionization potential; (2) The degeneracy of electrons has little effects on the pressure of PPDW; (3) The effects among charged particles makes the pressure of PPDW decreased at higher temperature, by no more than 10%; (4) When n=1029 m-3 and T2104 K, the pressure goes up by about 30% for the perturbation of atom energy level.