'Triggerless' triggering of vacuum arcs

被引:98
作者
Anders, A [1 ]
Brown, IG [1 ]
MacGill, RA [1 ]
Dickinson, MR [1 ]
机构
[1] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
关键词
D O I
10.1088/0022-3727/31/5/015
中图分类号
O59 [应用物理学];
学科分类号
摘要
Vacuum arcs can be initiated without external means of power enhancement at the cathode surface (by using a high-voltage trigger, laser triggering, and so on). Are initiation by simply applying the relatively low voltage of the are power supply is possible if the cathode-anode-separating insulator is coated with a conducting layer and the current at the layer-cathode interface is concentrated at one or a few contact points. The local power density at these contact points can exceed 10(16) W m(-3) which is sufficient for plasma production and thus are initiation. This 'triggerless' principle has been tested successfully with a large number of cathode materials. One extended test was performed with titanium and more than 10(6) pulsed vacuum are initiations have been obtained.
引用
收藏
页码:584 / 587
页数:4
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