利用光电倍增管对磁驱动滑移电弧直径的研究

A study on size of magnetism-driven gliding arc with a multiplier phototube

利用光电倍增管测量得到了电弧电流分别为0.7A和1.0A、外磁场0.32—0.8T条件下磁驱动滑移电弧的侧向直径。对于固定的电弧电流,电弧直径随外磁场的增加而减小,并趋向于某一固定值,对于0.7A和1.0A的电弧电流,电弧直径分别维持在0.78mm和0.88mm。根据光电倍增管所得信号对电弧的截面形状进行描述。

Diameter of gliding arc driven by magnetic field at different arc currents (0.7A to 1.0A) and magnetic inductances (0.32T to 0.8T) was measured by using a multiplier phototube. For a constant arc current, the diameter decreased with increasing magnetic induced-intensity and tends to a constant. The diameter was at 0.78mm and 0.88mm, respectively, for arc current of 0.7A and 1.0A. According to signals of the multiplier phototube, the arc section is described, too.