• 作者： 段家瑞;M.K. SINHA
• 作者服務機構： 工業技術研究院量測技術發展中心; 美國北達科塔州立大學物理系
• 中文摘要： 實驗結果顯示電極表面的光滑程度在電壓崩潰效應中扮演著重要的角色。電極表面被不同顆粒度的氣化鋁及碳化矽研磨後，不同光滑程度的陽－陰極表面被組合，觀察其場放射，場增強因子，表面功函數及其崩潰電壓。我們發現表面愈光滑的電極，其崩潰電壓愈高。同時，實驗顯示，陽極表面在電壓崩潰效應中扮演舉足輕重的角色。
• 英文摘要： We report the results of an experimental investigation of the role played by the surface finish ofmolybdenum electrodes on electrical breakdown in high vacuum. The electrode surfaces were mechanicallypolished with abrasive powders of different particle sizes, ranging from 0.05μm (方程式無法摘錄) to 240 grit SiC(particle size≒50%μm）. Seven pairs of electrodes, each with different combinations of anode-cathode surfacefinishes, were used. The breakdown field depended on the surface roughness of both electrodes. It had thehighest value when both electrodes had the smoothest finishes and lowest values when the cathode surfacewas roughest and that of the anode smoothest. Our experiments show that the anode surface plays animportant role in breakdown.
• 中文關鍵字： breakdown; vacuum; electrodel molybdenum; roughness
• 英文關鍵字： --