摘要
A pulse generator with a voltage rise time of～1.5 ns and voltage amplitude variable from 30 kV to 200 kV was designed for generating runaway electron beams in atmospheric pressure air with different interelectrode gaps.The influence of the voltage amplitude and gap length on the generation was studied.In the gas diode geometry under study,the gap voltage at which the generation of a runaway electron beam begins was determined.Decreasing the voltage pulse amplitude does not increase the beam current pulse width measured with a time resolution of～0.1 ns.It is shown that the escape of beam electrons to the downstream of the foil is sync in time with the voltage drop across the gap,and that the delay of beam current generation increases gradually from 1.1 ns to 2.6 ns as the voltage pulse amplitude across the gap decreases from～100 kV to 40 kV.
A pulse generator with a voltage rise time of-l.5 ns and voltage amplitude variable from 30 kV to 200 kV was designed for ge- nerating runaway electron beams in atmospheric pressure air with different interelectrode gaps. The influence of the voltage amplitude and gap length on the generation was studied. In the gas diode geometry under study, the gap voltage at which the generation of a runaway elec- tron beam begins was determined. Decreasing the voltage pulse amplitude does not increase the beam current pulse width measured with a time resolution of-0.1 ns. It is shown that the escape of beam electrons to the downstream of the foil is sync in time with the voltage drop across the gap, and that the delay of beam current generation increases gradually from 1.1 ns to 2.6 ns as the voltage pulse amplitude across the gap decreases from -100 kV to 40 kV.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2013年第9期2112-2118,共7页
High Voltage Engineering
基金
Project supported by Russian Foundation for Basic Research （12-08-91150-GFEN_a）, National Natural Science Foundation of China （51222701, 51207154, 51211120183）, National Basic Research Program of China （973 Program） （20llCB209402）, Opening Project of State Key Laboratory of Electrical Insulation and Power Equipment in Xi＇an Jiaotong University （EIPEI2204）, Chinese Academy of Sciences Visiting Professorship for Senior International Scientists （2012TtG0021）.
关键词
脉冲上升时间
电压幅值
逃逸电子
大气压力
纳秒
空气
间隙电压
脉冲幅度
runaway electron
atmospheric pressure air
nonuniform electric field
nanosecond diffuse discharge
interelectrode gaps
su- pershort avalanche electron beam
