Study of DC Breakdown Voltage in Low Pressure Argon and Nitrogen Gases for Several Electrode Gap

2017 ◽  
Vol 20 (3) ◽  
pp. 87-90 ◽  
Author(s):  
Waleed Ibrahim Yaseen ◽  
Keyword(s):  
Breakdown Voltage ◽  
Low Pressure ◽  
Electrode Gap

scholarly journals Diagnostics of low-pressure capacitively coupled RF discharge argon plasma

2019 ◽  
Vol 13 (27) ◽  
pp. 76-82
Author(s):  
Kadhim A. Aadim
Keyword(s):  
Electron Temperature ◽  
Electron Density ◽  
Langmuir Probe ◽  
Gas Flow ◽  
Low Pressure ◽  
Gas Pressure ◽  
Rf Discharge ◽  
Electrode Gap ◽  
Probe Characteristic ◽  
Capacitively Coupled

Low-pressure capacitively coupled RF discharge Ar plasma has been studied using Langmuir probe. The electron temperature, electron density and Debay length were calculated under different pressures and electrode gap. In this work the RF Langmuir probe is designed using 4MHz filter as compensation circuit and I-V probe characteristic have been investigated. The pressure varied from 0.07 mbar to 0.1 mbar while electrode gap varied from 2-5 cm. The plasma was generated using power supply at 4MHz frequency with power 300 W. The flowmeter is used to control Argon gas flow in the range of 600 standard cubic centimeters per minute (sccm). The electron temperature drops slowly with pressure and it's gradually decreased when expanding the electrode gap. As the gas pressure increases, the plasma density rises slightly at low gas pressure while it drops little at higher gas pressure. The electron density decreases rapidly with expand distances between electrodes.

Design, fabrication, and testing of microelectromechanical system spark gap switch based on streamer theory

2021 ◽  
Vol 32 (1) ◽  
pp. 015001
Author(s):  
Yuecen Zhao ◽  
Wenzhong Lou ◽  
Hengzhen Feng ◽  
Bo He
Keyword(s):  
Breakdown Voltage ◽  
Supply Voltage ◽  
Gap Size ◽  
Electrode Gap ◽  
Power Supply Voltage ◽  
Spark Gap ◽  
Rlc Circuit ◽  
Gas Breakdown ◽  
Spark Gap Switch ◽  
Main Electrode

Abstract In order to realize that the fuze micro system has both high security and miniaturization characteristics, the spark gap research of Micro-Electro-Mechanical System safety system is carried out. So that to solve the safe and reliable function of the spark gap switch under the low power supply voltage (35 V) of the fuze micro system, the gas gap size and electrode radius are shown to significantly affect the gas breakdown voltage using streamer theory. Based on these results, a spark gap switch with triggering electrodes is designed. The triggering electrode gap is 2 μm and the main electrode gap is 10 μm. A spark gap switch test circuit is designed based on the RLC circuit. Through finite element simulation, it is verified that the gas breakdown voltage increases nonlinearly with increasing gap size. Pre-breakdown spark gap switches were fabricated based on the surface silicon process and tested. The test results show that the conduction voltage values of the triggering electrode and the main electrode are basically consistent with the simulation and calculation results. The breakdown voltage of the main electrode can be greatly reduced by applying a certain voltage to the triggering electrode, realize the reliable function in the micro fuze system.

scholarly journals The Nanosecond Impulsive Breakdown Characteristics of Air, N2 and CO2 in a Sub-mm Gap

Plasma ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 12-29
Author(s):  
Ting Liu ◽  
Igor Timoshkin ◽  
Mark P. Wilson ◽  
Martin J. Given ◽  
Scott J. MacGregor
Keyword(s):  
Breakdown Voltage ◽  
Rise Time ◽  
Breakdown Field ◽  
Number Density ◽  
Electrode Gap ◽  
Scaling Relationships ◽  
Wide Range ◽  
Gas Pressures

The present paper investigates the breakdown characteristics—breakdown voltage, with breakdown occurring on the rising edge of the applied HV impulses, and time to breakdown—for gases of significance that are present in the atmosphere: air, N2 and CO2. These breakdown characteristics have been obtained in a 100 µm gap between an HV needle and plane ground electrode, when stressed with sub-µs impulses of both polarities, with a rise time up to ~50 ns. The scaling relationships between the reduced breakdown field Etip/N and the product of the gas number density and inter-electrode gap, Nd, were obtained for all tested gases over a wide range of Nd values, from ~1020 m−2 to ~1025 m−2. The breakdown field-time to breakdown characteristics obtained at different gas pressures are presented as scaling relationships of Etip/N, Nd, and Ntbr for each gas, and compared with data from the literature.

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