Abstract
The electron energy distribution functions for helium plasmas have been calculated using the Boltzmann equation. Three characteristic temperatures of these distribution functions have been determined (from mean energy, the Einstein formula, and the logarithmic slope). The reaction rates for nonequilibrium and three equilibrium (corresponding to these three characteristic temperatures) distribution functions have been calculated and compared We have found that the use of equilibrium values for reaction rates of processes going from the ground state can lead to great errors in results, the use of equilibrium values for processes going from higher levels is possible for higher reduced electric fields, and there is no problem with using equilibrium values. for superelastic processes.
Published Version
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