研究目的
Investigating the newly recognized modes of vacuum arc with the active anode, specifically the anode plume and anode spot type 2, and their implications for vacuum circuit breakers and plasma applications.
研究成果
The study identifies the anode plume and anode spot type 2 as new modes of high-current vacuum arc, specific for CuCr25 electrodes. These modes have implications for the breaking capacity of vacuum circuit breakers and potential applications in plasma thrusters and pulse power applications. Further research is needed to explore these modes in other electrode materials and under magnetic fields.
研究不足
The study is limited to electrodes made of a copper-chromium composition (CuCr25). The impact of anode plume occurrence on recovering vacuum insulation after current zero is speculated but not directly measured.
1：Experimental Design and Method Selection:
The study involves the observation and analysis of vacuum arc modes, focusing on anode activity. It employs high-speed imaging and spectroscopic measurements to characterize the anode plume and anode spot type
2：Sample Selection and Data Sources:
Experiments were conducted using CuCr25 butt-type electrodes of diameters 10 mm and 20 mm.
3：List of Experimental Equipment and Materials:
A FASTCAM SA1.1 camera was used for high-speed imaging (180k fps).
4：1 camera was used for high-speed imaging (180k fps).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The arc modes were observed under varying current conditions, with particular attention to transitions between modes and the formation of the anode plume and anode spot type
5：Data Analysis Methods:
Spectroscopic data was analyzed to determine the distribution of line intensities along the arc gap axis, focusing on copper lines of species Cu I, Cu II, Cu III.
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