The role of ions(N＋２) in the dissociation of nitrogen in a direct-current glow discharge

Abstract

A model is developed for a nitrogen direct-current glow discharge by a combination of Monte Carlo model of fast electrons and various heavy particles(N＋２，N＋，Nf),in which N+2-N２　dissociative charge transfer is incorporated,and the role of this process in nitrogen glow discharge is investigated .It is found that this process is dominant in the space of close to the cathode,and that this becomes important with increasing voltage,especially that this plays an important role at higher voltages for the production of fast atomic species(N＋，Nf) at the cathode.We have also compared our calculated results with experimental data.