Self-consistent Monte-Carlo simulation of the positive column in Argon

摘要

A high accurate self-consistent Monte-Carlo method including charged andneutral particle motion and resonance photon transport is developed and appliedto simulation of positive column discharge in Argon. The distribution of powerloss across the tube is investigated. It is shown that negative slope ofcurrent-voltage gradient curve can not be explained by only one factor.Diffusion of metastable atoms to the tube wall in the case of low current($0.2-3$mA) responds for the most part of negative slope. For the high currentsthe variation of radiation power loss makes a main contribution to theamplitude of negative slope.