Atmospheric Pressure Cold Argon/Oxygen Plasma Jet Assisted by Preionization of Syringe Needle Electrode

QIAN Muyang(钱沐杨); REN Chunsheng(任春生); WANG Dezhen(王德真); FENG Yan(冯岩); ZHANG Jialiang(张家良)

Plasma Science and Technology > 2010 > 12(5): 561-565.

QIAN Muyang(钱沐杨), REN Chunsheng(任春生), WANG Dezhen(王德真), FENG Yan(冯岩), ZHANG Jialiang(张家良). Atmospheric Pressure Cold Argon/Oxygen Plasma Jet Assisted by Preionization of Syringe Needle Electrode[J]. Plasma Science and Technology, 2010, 12(5): 561-565.

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Atmospheric Pressure Cold Argon/Oxygen Plasma Jet Assisted by Preionization of Syringe Needle Electrode

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023, China

Funds: supported by National Natural Science Foundation of China (Nos.10775026, 50537020, 50528707)

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Abstract

Abstract

An atmospheric pressure nonequilibrium argon/oxygen plasma jet assisted by the preionization of syringe needle electrode discharge is reported. With the syringe needle plasma as its pre-ionization source, the hybrid barrier-jet was shown to generate uniform discharge with a lower breakdown voltage and a relatively low gas temperature varying from 390 to 440 ºK, even when the vol. % oxygen in argon was up to 6%. Utilizing the actinometry method, the concentration of atomic oxygen was estimated to be about in an orders of magnitude of 1017/cm3. The argon/oxygen plasma jet was then employed to clean out heat transfer oil, with a maximum cleaning rate of 0.1 mm/s achieved.
- atmospheric pressure,
- nonequilibrium Ar/O2 plasma,
- preionization,
- actinometry,
- concentration of atomic oxygen,
- heat transfer oil

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