A Gas Switch Triggered by a Microhollow Cathode Discharge (MHCD) Array With Lower Trigger Energy

Author

Kefu Liu ; Yaqing Teng ; Liuxia Li ; Jian Qiu

Author_Institution

Inst. of Electr. Light Sources, Fudan Univ., Shanghai, China

Volume

60

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

875

Lastpage

879

Abstract

A microhollow cathode discharge (MHCD) array was operated at atmospheric pressure with a pulse voltage of 2.5 kV supplied by a trigger circuit. Triggered by this MHCD array, a gas switch with an annular plate structure operated under a voltage of 27 kV with a fall time of 30 ns and a current of 400 A with a rise time of 15 ns was investigated. It is used for discharging the charge stored in a capacitor of 4 nF through a resistor of 50 Ω. The advantages of the switch are obvious: a compact trigger with lower trigger voltage. An electrical model including MHCD capacitance is built, and the simulation results agree well with the experimental results.

Keywords

pulsed power switches; switchgear; MHCD array; MHCD capacitance; annular plate structure; atmospheric pressure; capacitance 4 nF; current 400 A; electrical model; gas switch; microhollow cathode discharge array; pulse voltage; resistance 50 ohm; time 15 ns; time 30 ns; trigger energy; trigger voltage; voltage 2.5 kV; voltage 27 kV; Arrays; Capacitance; Cathodes; Discharges (electric); Switches; Voltage measurement; Delay time; gas switch; microhollow cathode discharge (MHCD); trigger;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2012.2235147

Filename

6409444