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Gas Breakdown Characteristics in the Repetitively Nanosecond-Pulse Regime With 120kV
Author(s): 
Pages: 44-49,62
Year: Issue:  7
Journal: TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY

Keyword:  气体放电重复频率脉冲击穿特性;
Abstract: 在120kV的重复频率(10Hz,100Hz,500Hz,1000Hz)脉冲高压下,研究了干燥空气在平板间隙(5~15mm),气压(0.1~0.5MPa)下的击穿特性.得到了击穿时延、重复频率耐受时间、施加脉冲个数等与重复频率的关系,并观察到相关的发光现象.结果表明经典的流注击穿判据不符合重复频率脉冲下的击穿,高重复频率下的击穿与低重复频率下的击穿不同.重复频率的纳秒脉冲下的击穿需要考虑受激粒子、残余电荷等在放电过程的影响.亚稳态受激粒子、空间残余电荷的积累效应产生大量的初始电子,从而气体击穿是大量初始电子引燃,多弧道的击穿.
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