Magnetically Induced Current Chopping in Low‐Pressure Discharges
Magnetically Induced Current Chopping in Low‐Pressure Discharges
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低压放电中的磁感应电流斩波
DOI：
10.1063/1.1692086
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发表时间：
1968
影响因子：
4.6
通讯作者：
A. Ware
中科院分区：
文献类型：
--
作者：
D. Tuma;A. Ware
电流斩波在低压（2 × 10−5 − 5 × 10−3 Torr）电弧中产生磁感应，电流为50 - 200 A。使用θ箍缩或轴向均匀磁场在1 - 10 μ sec的持续时间内实现斩波。当一个8 mH的电感器与电弧电路串联时，电弧两端的电压尖峰大于80 kV，并伴随着斩波。在电流斩波期间检测到频率高于10 MHz的不规则振荡;振荡的幅度与电压尖峰成比例。在电流斩波之前和之后，检测到频率范围从100 - 200 kHz扩展的其他振荡。X射线在电流斩波时从电弧发射，其通量取决于电压尖峰。
Current chopping has been magnetically induced in low‐pressure (2 × 10−5 − 5 × 10−3 Torr) arcs carrying currents of 50‐200 A. The chopping was achieved in a time duration of 1‐10 μ sec using a θ‐pinch or an axially uniform magnetic field. Voltage spikes across the arc larger than 80 kV accompanied the chopping when an 8‐mH inductor was connected in series with the arc circuit. Irregular oscillations of frequencies higher than 10 MHz were detected during current chopping; the amplitude of the oscillations was proportional to the voltage spike. Other oscillations whose frequency range extended from 100‐200 kHz were detected, preceding and following the current chopping. x rays were emitted from the arc at current chopping whose flux depended on the voltage spike.