The progress of striking and restriking of the vacuum arc at the contacts in an axial magnetic field has been photographed with a microcomputer-based high-speed camera system for dynamic images.

• 利用动态图像高速微机系统，对真空电弧纵向磁场触头燃弧及重燃过程进行了动态拍摄，对比分析了不同开距下宏观动态图像、微观电子密度和电弧中心光强的不同时域特征。