物理学报Issue(5)：254-260,7.DOI:10.7498/aps.62.055101
基于流体模型和非平衡态电子能量分布函数的高功率微波气体击穿研究
High power microwave breakdown in gas using the fluid model with non-equilibrium electron energy distribution function∗
摘要
Abstract
The electron energy distribution function (EEDF) is usually assumed to be of the Maxwellian distribution in the fluid model in the simulation of high power microwave breakdown in gas. However, this assumption may lead to some large errors in the simulations. In this paper we compute the non-equilibrium EEDF via solving the Boltzmann equation directly, and incorporate it into the fluid model for argon breakdown. Numerical simulations show that the breakdown time obtained by the fluid model with the non-equilibrium EEDF accords well with the Particle-in-cell-Monte Carlo collision simulation result, while the Maxwellian EEDF has higher energy tail and results in faster breakdown time at low mean electron energy. Based on the non-equilibrium EEDF, the dependence of the breakdown threshold on the pressure predicted by the fluid model accord well with the argon breakdown experimental result.关键词
微波气体击穿/电子能量分布函数/流体模型/玻尔兹曼方程Key words
microwave breakdown in gas/electron energy distribution function/fluid model/Boltzmann equation引用本文复制引用
赵朋程,廖成,杨丹,钟选明,林文斌..基于流体模型和非平衡态电子能量分布函数的高功率微波气体击穿研究[J].物理学报,2013,(5):254-260,7.基金项目
中央高校基本科研基金(批准号:0903005203189)、国家自然科学基金(批准号:11005025,10975026,11275034)、哈尔滨工业大学科学研究创新基金(批准号:HITNSRIF2009044)和辽宁省科学技术计划重点项目(批准号:2011224007)资助的课题.Project supported by the Fundamental Research Funds for the Central Universities (Grant No.0903005203189), the National Natural Science Foundation of China (Grant Nos.11005025,10975026,11275034), the Scientific Research Innovation Foundation of Harbin Institution of Technology, China (Grant No. HITNSRIF2009044), and the Key Project of the Scientific Technology Program of Liaoning Province (Grant No.2011224007) （批准号:0903005203189）
