用条纹技术对低电流真空电弧的放电过程进行成像

XXIst International Symposium on Discharges and Electrical Insulation in Vacuum, 2004. Proceedings. ISDEIV. Pub Date : 2004-09-27 DOI:10.1109/DEIV.2004.1418650

M. B. Bochkarev

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引用次数: 6

摘要

用条纹相机对3 ~ 12 A电流下的铜真空弧阴极光斑进行了成像，时间分辨率为0.7 ns，空间分辨率为2.9 μm。结果表明，在两个阈值电流(3A)下，铜最可能的外显子周期持续时间为15 ~ 20ns，强等离子体产生阶段持续时间为5 ~ 10ns。随着电流的增大，出现周期越长、强等离子体产生相越长的外显子，因此在8个阈值电流(12 A)时，最可能的外显子周期持续时间为50 ~ 70 ns，强等离子体产生相持续时间为10 ~ 20 ns。周期时间最短的电子子仍然出现在12 A电流下。

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Ecton processes of low current vacuum arc imaged with streak technique

A copper vacuum arc cathode spot at current 3-12 A was imaged by streak camera with time resolution up to 0.7 ns and spatial resolution up to 2.9 μm. It was found that for copper at currents of two threshold current (3A) the most probable duration of ecton cycle is 15- 20 ns and the duration of phase of intense plasma production is 5 - 10 ns. As current rises the ectons having more long cycle duration and more long phase of intense plasma production appears, so that at current of eight threshold current (12 A) the most probable duration of ecton cycle is 50- 70 ns and the duration of phase of intense plasma production is 10-20 ns. The ectons with shortest cycle time still appears at 12 A current.

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来源期刊

XXIst International Symposium on Discharges and Electrical Insulation in Vacuum, 2004. Proceedings. ISDEIV.

CiteScore

0.40

自引率

0.00%

发文量