Title :
The simulation of electron beam formation in initial stage of gas discharge
Author :
Shklyaev, V.A. ; Belomyttsev, S.Ya. ; Ruzhov, V.V. ; Turchanovskii, I. Yu
Author_Institution :
Inst. of High Current Electron., Tomsk, Russia
Abstract :
There was elaborated the discharge development model based on particle-in-cell method taking into the account volume charge and collisions by method Monte-Carlo. The simulation of the initial stage of gas discharge on conditions that E/P>;1kV/cm/Torr showed that in the interval of ~10 ps electron beam of run-away electrons was formed nearby cathode. This beam consists of electrons emitted from cathode and electrons arising as a result of gas ionization. It was showed that duration of the beam of run-away electrons nearby cathode mainly depend on outer electrical field screening by plasma and was equal to 10-20 ps.
Keywords :
Monte Carlo methods; discharges (electric); electron beams; ionisation; plasma collision processes; plasma simulation; plasma transport processes; shielding; Monte-Carlo method; collision process; electron beam simulation; electron emission analysis; gas discharge simulation; gas ionization; outer electrical field screening; particle-in-cell method; run-away electron beam; volume charge analysis; Elementary particle vacuum; ISO standards; Nonhomogeneous media; Numerical models;
Conference_Titel :
High Power Particle Beams (BEAMS), 2008 17th International Conference on
Conference_Location :
Xian
