Gas temperature measurements in high pressure glow discharges in air

Block, R.; Toedter, Olaf; Schoenbach, K.H.

doi:10.2514/6.1999-3434

Cited by 13 publications

(12 citation statements)

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“…2,3 More recently, stable discharge operation has also been obtained in atmospheric pressure air. 4 When operated in the hollow cathode discharge mode electrons are extracted through the anode opening at moderate electric fields. These electrons support a stable plasma between the microhollow anode and a third positively biased electrode.…”

Section: ͓S0003-6951͑99͒01425-4͔mentioning

confidence: 99%

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Direct current glow discharges in atmospheric air

Mohamed

Block

Schoenbach

2002

IEEE Trans. Plasma Sci.

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Section: ͓S0003-6951͑99͒01425-4͔mentioning

confidence: 99%

“…This equation holds for air 5 at room temperature T 0 . Recent measurements showed that the gas temperature T in air glow discharges at currents of approximately 10 mA is close to 2000 K. 4 In order to take this elevated gas temperature into account, it was assumed that e p depends linearly on T:…”

Section: Mcsglowmentioning

confidence: 99%

Direct current glow discharges in atmospheric air

Mohamed

Block

Schoenbach

2002

IEEE Trans. Plasma Sci.

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“…Experiments in argon and xenon have shown that dc operation of hollow cathode discharges in noble gases is possible at atmospheric pressure, if the diameter of the cathode hole is reduced to values on the order of 100 m. 5,6 Recent results indicate that stable discharge operation can also be obtained in atmospheric pressure air. 7 The geometry of the microdischarge system is shown in Fig. 1 ͑top͒.…”

Section: Concept Of Microhollow Cathode Sustained Glow Dischargesmentioning

confidence: 99%

Direct current high-pressure glow discharges

Stark¹,

Schoenbach²

1999

Journal of Applied Physics

191

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Stabilization and control of a high-pressure glow discharge by means of a microhollow cathode discharge has been demonstrated. The microhollow cathode discharge, which is sustained between two closely spaced electrodes with openings of approximately 100 m diam, serves as plasma cathode for the high-pressure glow. Small variations in the microhollow cathode discharge voltage generate large variations in the microhollow cathode discharge current and consequently in the glow discharge current. In this mode of operation the electrical characteristic of this system of coupled discharges resembles that of a vacuum triode. Using the microhollow cathode discharge as plasma cathode it was possible to generate stable, direct current discharges in argon up to atmospheric pressure, with estimated electron densities in the range from 10 11 to 10 12 cm Ϫ3 . The recently demonstrated parallel operation of these discharges indicates the potential of this technique for the generation of large volume plasmas at high gas pressure through superposition of individual glow discharges.

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“…Electron densities in MHC discharges in atmosphericpressure air have also been measured using heterodyne infrared interferometry [86]. In a MHC discharge with a hole diameter of 200 μm and a current of 12 mA at a voltage of 380 V, the electron density in atmospheric-pressure air was 10 16 cm −3 [78]. The electron density in atmosphericpressure MHCS discharges is considerably lower.…”

Section: Electron Densitymentioning

confidence: 99%

“…For a MHC discharge in atmospheric-pressure air, the temperature obtained with this diagnostic method rises from 1700 K to 2000 K when the current is increased from 4 mA to 12 mA [78]. For atmospheric-pressure air microdischarges between parallel electrodes, the rotational temperatures varied between 700 and 1550 K for current of 4 and 10 mA, respectively [31].…”

Section: Gas Temperaturementioning

confidence: 99%

20 years of microplasma research: a status report

Schoenbach

Becker²

2016

Eur. Phys. J. D

168

112

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Abstract. The field of microplasmas gained recognition as a well-defined area of research and application within the larger field of plasma science and technology about 20 years ago. Since then, the activity in microplasma research and applications has continuously increased. A survey of peer reviewed papers on microplasmas published annually shows a steady increase from fewer than 20 papers in 1995 to about 75 in 2005 and more than 150 in 2014. This count excludes papers that deal exclusively with technological applications where the microplasma is used solely as a tool. This topical review aims to provide a snap shot of the current state of microplasma research and applications. Given the rapid proliferation of microplasma applications, the topical review will focus primarily on the status of microplasma science and our understanding of the physics principles that enable microplasma operation. Where appropriate, we will also address microplasma applications, however, we will limit the discussion of microplasma applications to examples where the application is closely tied to the plasma science. No attempt is made to provide a comprehensive and in-depth review of the diverse range of all microplasma applications, except for the inclusion of a few key references to recent reviews of microplasma applications.

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Gas temperature measurements in high pressure glow discharges in air

Cited by 13 publications

References 1 publication

Direct current glow discharges in atmospheric air

Direct current glow discharges in atmospheric air

Direct current high-pressure glow discharges

20 years of microplasma research: a status report

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