Spatially resolved electron swarm behavior in steady state townsend condition

Spatially resolved electron transport properties in steady state (SST) unde r the uniform electric field are investigated. It is found that the balance of local energy gain and loss always holds by taking into account the dive rgence of the energy flow, that is, the energy conservation law and the con tinuity equation of the energy flow for an electron swarm are affirmed to h old with the numerical data. Further, the features of the electron flux and the energy flow, the effects of ionization, excitation and attachment on t he formation of the energy distribution, the condition forming the equilibr ium and non-equilibrium regions in conservative and nonconservative cases f or the electron number due to ionization and attachment etc. are discussed in detail.