Distribution of Cathode Spots in Vacuum Arc Under Nonuniform Axial Magnetic Fields

• 来源期刊: 等离子体科学和技术（英文版）
• 年，卷（期）: 2007,（6）
• 页码范围: 666-669
• 页数: 4页
• 语种: 英文

摘要

Recent results on the distribution of vacuum arc cathode spots (CSs) in nonuniform axial magnetic field (AMF) are presented.Based on previous studies,we deem that two contrary influences of AMF,inward effect and outward effect,are attributed to CSs distribution.With this notion,we have analyzed the controlling effectiveness of nonuniform AMF on CSs distribution. Experiments were conducted in a detachable vacuum chamber with iron-style AMF electrodes.Images of vacuum arc column and the distribution of CSs were photographed with a high-speed charge coupled device (CCD) camera. Experimental results agreed well with the theoretical analysis.