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真空短间隙微弧级联效应观测

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曹柱荣, 丁永坤, 刘慎业. 2010: 真空短间隙微弧级联效应观测, 物理学报, 59(4): 2640-2644.
引用本文: 曹柱荣, 丁永坤, 刘慎业. 2010: 真空短间隙微弧级联效应观测, 物理学报, 59(4): 2640-2644.
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Cao Zhu-Rong, Ding Yong-Kun, Liu Shen-Ye. 2010: Observation of micro-arc cascade in vacuum short gap, Acta Physica Sinica, 59(4): 2640-2644.
Citation: Cao Zhu-Rong, Ding Yong-Kun, Liu Shen-Ye. 2010: Observation of micro-arc cascade in vacuum short gap, Acta Physica Sinica, 59(4): 2640-2644.
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真空短间隙微弧级联效应观测

  • 中国工程物理研究院激光聚变研究中心,绵阳,621900

Observation of micro-arc cascade in vacuum short gap

  • 摘要: 利用0.5 mm间隙微通道板成像器观测了微弧放电的斑点级联效应.实验发现,微弧阴极斑点的运动轨迹呈多类型的折线轨迹,斑点间隙在200-300μm,首发射阴极斑点的放电强度比次级斑点高一个量级以上,而且次级斑点之间的放电强度相对稳定,次级斑点在放电阴极表面无融蚀现象.实验表明,次级斑点产生机制与首发射存在较强的依赖关系.
    Abstract: The cascade effect of cathode spots from vacuum micro-arcing has been observed by micro-channel plate(MCP)imager in direct current mode.The spots-track on MCP surface can be drawn out as a multiform dog-leg path,and betweencenters of spots is 200-300μm.The first spot is always the lucida,and its intensity is about decuple of its subspots.The intensity between cascade sub-spots is at the same level,and sub-spots are nondestructive for MCP cathode surface.The experiments showed that arcing of sub-spots depends on emission of the first spot.
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  • 刊出日期:  2010-04-30

真空短间隙微弧级联效应观测

  • 中国工程物理研究院激光聚变研究中心,绵阳,621900

摘要: 利用0.5 mm间隙微通道板成像器观测了微弧放电的斑点级联效应.实验发现,微弧阴极斑点的运动轨迹呈多类型的折线轨迹,斑点间隙在200-300μm,首发射阴极斑点的放电强度比次级斑点高一个量级以上,而且次级斑点之间的放电强度相对稳定,次级斑点在放电阴极表面无融蚀现象.实验表明,次级斑点产生机制与首发射存在较强的依赖关系.

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