Spectroscopic study of a supersonic jet of laser-heated argon plasma
Autor: | Zbigniew Peradzyński, M. Dudeck, M. de Graaf, J. Hoffman, J. Kurzyna, Zygmunt Szymanski, Viviana Lago |
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Rok vydání: | 1997 |
Předmět: |
Electron density
Jet (fluid) Argon Acoustics and Ultrasonics Physics::Instrumentation and Detectors Nozzle chemistry.chemical_element Plasma Condensed Matter Physics Laser Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Physics::Fluid Dynamics chemistry Physics::Plasma Physics law Physics::Atomic and Molecular Clusters Continuous wave Supersonic speed Atomic physics Astrophysics::Galaxy Astrophysics |
Zdroj: | Journal of Physics D: Applied Physics. 30:998-1006 |
ISSN: | 1361-6463 0022-3727 |
DOI: | 10.1088/0022-3727/30/6/013 |
Popis: | A spectroscopic study of a low-pressure supersonic jet of laser-heated argon plasma is presented. The experimental set-up consisted of a high-pressure convergent nozzle and a supersonic nozzle. The supersonic nozzle was placed just behind the convergent nozzle and was connected to a low-pressure chamber. A continuous wave laser with output power of 2 kW was used to maintain the plasma in the stream of argon gas flowing from the convergent nozzle. The plasma then expanded through the supersonic nozzle. Emission spectra from the laser-sustained plasma and supersonic jet were measured with a 1.3 m focal length spectrograph and 1254 silicon intensified target (SIT) detector connected to an EG&G PARC optical multichannel analyser (OMA) III. We found that the supersonic stream of argon plasma had an electron density of - and a temperature of 6 - 7 kK. |
Databáze: | OpenAIRE |
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