斜磁场下真空弧阴极光斑运动模型

2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) Pub Date : 2016-09-01 DOI:10.1109/DEIV.2016.7748714

I. Beilis

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引用次数: 2

摘要

建立了斜截于阴极表面磁场中的真空弧阴极光斑运动模型。该模型考虑了通过磁场法向分量的点运动产生的电磁力，该电磁力加速了等离子体在锐角开口方向的运动。建立了漂移角(逆行方向与阴极光斑运动之间的关系)与磁力线与阴极表面相交形成的锐角之间的关系。分析了漂移角与Robson实验中测得的锐角和磁场强度的关系。

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A model of vacuum arc cathode spot motion in an oblique magnetic field

A model of vacuum arc cathode spot motion in a magnetic field which obliquely intercepts the cathode surface was developed. The model takes in account an electrical force generated by spot motion across the normal component of the magnetic field, which accelerates plasma in the direction of the opening of the acute angle. A relation between the drift angle (between the retrograde direction and the cathode spot motion) and the acute angle formed by the intersection of the magnetic field lines with the cathode surface, was developed. The dependencies of the drift angle on the acute angle and magnetic field strength measured in Robson's experiment were analyzed.

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2016 27th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

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