Temporal characteristics of runaway electrons in electron-neutral collision-dominated plasma of dense gases. Monte Carlo calculations

摘要

Electron runaway rates, and runaway delay time, runaway threshold energies were obtained from Monte Carlo (MC) simulations in the field domains 35-400 kV/cm and 240-400 kV/cm, respectively, for helium and nitrogen at 1 atm. MC simulations disprove all available analytical theories that ignore angular scattering of electrons, with the sole exception of Gurevich's theory for helium, in which angular scattering is relatively weak.