物理学报Issue(20)：325-331,7.DOI:10.7498/aps.62.205202
垂直相交高功率微波大气击穿的理论研究
Theoretical study on the air breakdown by perpendicularly intersecting high-power microwave
摘要
Abstract
Air breakdown by perpendicularly intersecting high-power microwave (HPM) is investigated by numerical solution of fluid-based plasma equations coupled with the Maxwell equations. For two coherently intersecting HPM beams, collisional cascade breakdown takes place only when the initial free electrons appear in or arrive at a region of strong electric field, where the electron can be accelerated. At the initial stage of discharge, the filamentary plasma moves along the strong field and forms plasma-filament band. When the plasma-filament band grows long enough, in the vicinity of which the two HPM beams are separated due to its scattering and absorption by plasma. The new plasma-filament bands continue to appear as time increases. It is also found that under the same condition, the plasma region produced by incoherent beams is smaller than by coherent beams.关键词
相交高功率微波束/大气击穿Key words
intersecting high-power microwave/air breakdown引用本文复制引用
周前红,董志伟..垂直相交高功率微波大气击穿的理论研究[J].物理学报,2013,(20):325-331,7.基金项目
国家自然科学基金(批准号:11105018)、国家重点基础研究发展计划(批准号:2013CB328904)和中国工程物理研究院科学技术发展基金(批准号:2012B0402064)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant No.11105018), the National Basic Research Program of China (Grant No.2013CB328904), and the Development of Science and Technology Foundation of China Academy of Engineering Physics, China (Grant No.2012B0402064) （批准号:11105018）
