PIC-MCC method to simulate the Nanosecond rectangular Pulse Needle-to-Plane Electrodes corona discha

• 作 者: Chaofeng Sang Jizhong Sun Qi Wang Dezhen Wang
• 机 构: State Key Laboratory of Materials Modification by Laser, Ion and Electron Beam,School of Physics and
• 出 处: 9th Asia-Pacific Conference on Plasma Science and Technology
• 发表日期: 2008年1期

　　It has been presented that a model of 1D in space and 3D in velocity self-consistent Particle in Cell with Monte Carlo collision technique was employed to simulate the argon discharges between needle-to-plane electrodes at high pressure, on which a nanosecond rectangular pulse was superimposed.The work mainly focused on the investigation of the spatio-temporal evolution of the discharges versus the needle tip shape, working gas pressure.It was found that the discharge mainly occurred in the regions near the needle tip.The small radius of the needle tip led to easy discharge;reducing the working gas pressure gives rise to a transition from a corona discharge to a glow-like discharge.The microscopic physical mechanism for the transition was explored.