Understanding Electrode Plasma Formation on Wires and Thin Foils via Vacuum Ultraviolet Spectroscopy of Desorbed Surface Contaminants

2023 IEEE International Conference on Plasma Science (ICOPS)(2023)

引用 0|浏览14
暂无评分
摘要
Power-flow studies on the 30-MA, 100-ns Z facility at Sandia National Labs have shown that plasmas in the facility's magnetically insulated transmission lines can result in a loss of current to the load. 1 During the current pulse, electrode heating causes neutral surface contaminants (water, hydrogen, hydrocarbons, etc.) to desorb, ionize, and form plasmas in the anode-cathode gap. 2 Shrinking typical electrode thicknesses (~1 cm) to thin foils (5–200 μm) produces observable amounts of plasma on smaller pulsed power drivers <1 MA).3 We suspect that as electrode material bulk thickness decreases relative to the skin depth (50–100 μm for a 100-500-ns pulse in aluminum), the thermal energy delivered to the neutral surface contaminants increases, and thus desorb faster from the current carrying surface.
更多
查看译文
关键词
Electrode,Vacuum Ultraviolet,Skin Depth,Hydrogen Diffusion,Bulk Solids
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要