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oe1(光电查) - 科学论文

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  • Vacuum Arc Plasma Heated by Sub-Terahertz Radiation as a Source of Extreme Ultraviolet Light

    摘要： This paper presents the results of the ?rst experimental studies of the interaction of a powerful sub-terahertz radiation with expanding highly inhomogeneous plasma of vacuum arc discharge. The tantalum plasma of a vacuum arc discharge additionally heated by the focused sub-terahertz radiation of a gyrotron, the radiation power is up to 250 kW, and the wavelength is 1.2 mm. Characteristics of the light emission in the extreme ultraviolet range are presented.

    关键词： gyrotron,vacuum arc plasma,Extreme ultraviolet light,sub-terahertz radiation

    更新于2025-09-23 15:21:01

  • [IEEE 2018 28th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) - Greifswald, Germany (2018.9.23-2018.9.28)] 2018 28th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) - Vacuum-Arc Anode Phenomena: New Findings and New Applications

    摘要： The vacuum arc modes from the viewpoint of anode activity have traditionally been considered as a diffuse arc, footpoints, anode spots, and an intense arc. Recent studies carried out jointly by the IHCE SB RAS and the INP-Greifswald have made it possible to identify anodic plume and anode spot type 2 as new modes of a high-current vacuum arc, specific for electrodes made of a copper-chromium composition. The anode plume appears either immediately before the anode spot of type 2, or immediately after the extinction of the anode spot of type 2. The appearance of the plume before the spot is unstable, while after the spot the plume is stable. Appearance of the plume is an indicator of the intense vapor flux of the anode material, which can reduce the breaking capacity of the vacuum circuit breaker (VCB). Implementation of the VCB operating mode free of both the anode spot type 2 and anode plume allows a more successful recovering of the electric strength of the VCB after current zero.

    关键词： vacuum arc,plasma diagnostics,plasma sources,circuit breakers

    更新于2025-09-09 09:28:46