A pulse-modulated nonequilibrium atmospheric-pressure microwave argon plasma discharge preionized by a kilohertz excited plasma jet

Journal Article · Mon Apr 23 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4705433· OSTI ID:22025533

Shouzhe, Li; Maochun, Xu; Xin, Zhang; Jialiang, Zhang ^[1]

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1. Key Laboratory of Materials Modification by Laser, Ion, Electron Beams, Ministry of Education, School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)

A pulse-modulated nonequilibrium atmospheric-pressure microwave argon surface wave plasma is generated by means of a preionization discharge with a single-electrode plasma jet driven by a power supply of 50 kHz. It is found that the electron induced Saha-like balance dominates excitation process in the plasma discharge through the electron temperature varying with the microwave input power and the applied voltage of kilohertz power supply. The microwave pulse-modulating effect on nonequilibrium characteristics of dual-frequency exciting argon surface wave plasma is studied by spectroscopic measurement of the excitation temperature and gas temperature.

• OSTI ID: 22025533
• Journal Information: Applied Physics Letters, Vol. 100, Issue 17; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATMOSPHERIC PRESSURE
ELECTRIC POTENTIAL
ELECTRON TEMPERATURE
ELECTRONS
EXCITATION
HIGH-FREQUENCY DISCHARGES
ION TEMPERATURE
IONIZATION
KHZ RANGE
MICROWAVE POWER TRANSMISSION
MICROWAVE RADIATION
PLASMA
PLASMA DIAGNOSTICS
PLASMA JETS
PLASMA SURFACE WAVES
PULSES