抄録
Behavior of the electron swarm at the starting condition of the self-sustaining discharge depending on p0d is investigated in Ne and Ar by using a Monte Carlo Simulation (MCS). The calculations are performed under the E/p0 and p0d conditions including the Paschen minimum which was obtained from the experiment by Penning and Addink. From the result it is found that the energy non-equilibrium region spread over almost the gap space in particular near the Paschen minimum. So we proposed the improved description for the formula of Townsend's self-sustaining condition. The calculated results allows that the starting conditions of the self-sustained discharge in Ne and Ar would be applicable to the Engel's theory.
