Investigations have been carried out into the mechanisms leading the initial breakdown of trigatron switches. The experimental work identifying effects of two different igniting factors are described and carried out in detail. One mechanism is when only the UV radiation generated from the ignition gap (gaps between the pin and adjacent electrodes) is applied to the main gap (gaps between the adjacent and opposite electrodes). The UV radiation is believed to produce free electrons through either photoionization or photodetachment in the main gap which in turn leads to the initial breakdown of the main gap. The second mechanism is when both the electron cloud and the UV radiation generated from the ignition gap are applied to the main gap. It is believed that both the electron cloud and the UV radiation result in the free electron in the main gap. Experimental results show that both the UV radiation and the electron cloud resulting from the ignition gap have obvious effects on the initial breakdown of the main gaps. Under conditions here, it seems that the electron cloud plays a more important role on the ignition of the initial breakdown.

中文翻译：

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触发开关初始击穿的主要点火因素研究

已经对导致触发开关初始故障的机制进行了调查。详细描述并执行了识别两种不同点火因素影响的实验工作。一种机制是当只有从点火间隙（引脚和相邻电极之间的间隙）产生的紫外线辐射施加到主间隙（相邻和相对电极之间的间隙）时。据信紫外线辐射通过主间隙中的光电离或光分离产生自由电子，这反过来导致主间隙的初始击穿。第二种机制是当电子云和从点火间隙产生的紫外线辐射都施加到主间隙时。据信，电子云和紫外线辐射都会在主间隙中产生自由电子。实验结果表明，点火间隙产生的紫外辐射和电子云对主间隙的初始击穿都有明显的影响。在这里的条件下，似乎电子云在初始击穿的点火中起着更重要的作用。