Collisional-Radiative Recombination of Ions and Electrons in High-Pressure Plasmas in Which the Electron Temperature Exceeds the Gas Temperature

The recombination rate of electrons in a hypothetical helium-like plasma at high pressure is calculated for cases in which the gas temperature is fixed at 300^∘{}K, and the electron temperature is varied from 300 to 2000^∘{}K. Neutral collision-induced recombination and electron collision-induced recombination are considered for ranges of electron density from 10⁸ to 10¹³ cm^-3 and gas densities from 10¹⁶ to 10¹⁹ cm^-3. An inverse three-halves dependence of recombination coefficient on electron temperature is found for certain densities.