Cathode spot motion in a vacuum arc with a long roof-shaped cathode under magnetic field

被引：12

作者：

Beilis, I. I. ^{[1
]}

Sagi, B. ^{[1
]}

Zhitomirsky, V. ^{[1
]}

Boxman, R. L. ^{[1
]}

机构：

[1] Tel Aviv Univ, Sch Elect Engn, Elect Discharge & Plasma Lab, Fac Engn, IL-69978 Tel Aviv, Israel

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 23期

基金：

以色列科学基金会;

关键词：

PLASMA SOURCE; DEPOSITION; DYNAMICS; STATE;

D O I：

10.1063/1.4922862

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Vacuum arc cathode spot motion was investigated on a "roof-shaped" aluminum cathode under an external magnetic field. The cathode included a flat roof-top and four sloped sides, inclined by an angle a. A high speed camera was used to observe cathode spot motion. The spot velocity on the slopes and the distribution of cathode spots on the roof and slopes was determined. It was obtained that under a magnetic field, the spot motion on the roof was slow (<1 m/s) and mainly random, while on the slopes fast retrograde motion was observed. This velocity increased linearly with the magnetic field and decreased slightly with alpha. (C) 2015 AIP Publishing LLC.

引用

页数：8