物理学报Issue(23)：1-9,9.DOI:10.7498/aps.63.235201
一种考虑电磁波驱动效应的等离子碰撞频率分段计算方法∗
A segmentation calculation metho d for plasma collision frequency considering the electro-magnetic wave driving effect
摘要
Abstract
An empirical formula of collision frequency has been used for years to calculate the collision frequency of aircraft plas-ma sheath. But the formula ignores the influences of electron-electron impact, electron-ion impact, and electro-magnetic (EM) wave driving effect on the collision frequency. To remedy these deficiencies, this paper proposes a segmentation calculation method. Based on the plasma kinetic theory, combined with real flow conditions and synthesizing the influ-ences of electron-electron impact, electron-ion impact and EM wave driving effect together, this method defines a new parameter, ionization-to-thermal motion ratio, to calculate the collision frequency segmentally. Theoretical analysis and simulation results demonstrate that this method is closer to the truth than the empirical formula when ITR is greater than 5.关键词
等离子鞘套/碰撞频率/经验公式/电波传播Key words
plasma sheath/collision frequency/empirical formula/wave propagation引用本文复制引用
刘智惟,包为民,李小平,刘东林..一种考虑电磁波驱动效应的等离子碰撞频率分段计算方法∗[J].物理学报,2014,(23):1-9,9.基金项目
国家重点基础研究发展计划(批准号:2014CB340205)和国家自然科学基金(批准号:61301173)资助的课题.* Project supported by the National Basic Research Program of China (Grant No.2014CB340205) and the National Natural Science Foundation of China (Grant No.61301173) （批准号:2014CB340205）
