| Issue |
EPL
Volume 129, Number 1, January 2020
|
|
|---|---|---|
| Article Number | 15001 | |
| Number of page(s) | 4 | |
| Section | Physics of Gases, Plasmas and Electric Discharges | |
| DOI | https://doi.org/10.1209/0295-5075/129/15001 | |
| Published online | 11 February 2020 | |
Study on plasma ejection near the anode in a pulsed low-current vacuum discharge
School of Electrical Engineering, Beijing Jiaotong University - 100044, Beijing, China
(a) 17117424@bjtu.edu.cn
(b) wzhliu@bjtu.edu.cn (corresponding author)
Received: 15 September 2019
Accepted: 21 January 2020
An electrode structure with two anodes, one of which is covered by an insulating material layer with a micropore, is proposed in this letter, and adopting this electrode structure enables a special vacuum discharge phenomenon, by which a visible ejected plasma jet is formed near the anode in a pulsed low-current (∼200 A) vacuum discharge to be firstly observed. According to experimental study and theory analysis, the formation mechanism of the discharge phenomenon observed above is analysed. Study on this special discharge phenomenon is of vital importance for revealing the basic physical processes in a vacuum discharge.
PACS: 52.80.Vp – Discharge in vacuum / 52.65.Cc – Particle orbit and trajectory / 52.50.Dg – Plasma sources
© EPLA, 2020
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