Experimental investigation on the influence of axial magnetic field on the lifetime of cathode spot of vacuum arc

2016 ◽  
Author(s):  
Cong Wang ◽  
Zongqian Shi ◽  
BingZhou Wu ◽  
Shenli Jia ◽  
Lijun Wang
Keyword(s):  
Magnetic Field ◽  
Experimental Investigation ◽  
Cathode Spot ◽  
Axial Magnetic Field ◽  
Vacuum Arc

Experimental Investigation on the Initial Expansion Process in a Drawn Vacuum Arc and the Influence of Axial Magnetic Field

2012 ◽  
Vol 40 (2) ◽  
pp. 528-534 ◽  
Author(s):  
Xiaochuan Song ◽  
Zongqian Shi ◽  
Shenli Jia ◽  
Zhonghao Qian ◽  
Chang Liu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Experimental Investigation ◽  
Axial Magnetic Field ◽  
Vacuum Arc ◽  
Expansion Process

scholarly journals Evolution of the Cathode Spot Distribution in an Axial Magnetic Field Controlled Vacuum Arc at Long Contact Gap

2017 ◽  
Vol 4 (1) ◽  
pp. 99-103
Author(s):  
B. Tezenas du Montcel ◽  
P. Chapelle ◽  
A. Jardy ◽  
C. Creusot
Keyword(s):  
Magnetic Field ◽  
High Speed ◽  
Cathode Spot ◽  
Axial Magnetic Field ◽  
Processing Method ◽  
Vacuum Arc ◽  
Single Spot ◽  
High Speed Video ◽  
Video Images ◽  
Arc Current

The distribution of cathode spots in a CuCr25 vacuum arc controlled by an axial magnetic field and ignited on the lateral surface of the cathode is investigated for long gap distances, from the processing of high-speed video images. The processing method includes also estimating the current carried by a single spot and reconstructing the distribution of the current density at the cathode. Various distributions depending partly on the arc current are described.

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