Atmospheric pressure argon plasma jets I – Measurements of spatial distribution for visible emission spectrum and vacuum ultraviolet

This paper describes the observed position dependent emission spectrum and vacuum ultraviolet (VUV) to clarify the optical structure of argon atmospheric pressure plasma jets (APJs). Visible emission spectra of argon, nitrogen, and OH molecules were measured as a function of position from the nozzle...

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Bibliographic Details
Published in:Electrical engineering in Japan 2024-03, Vol.217 (1), p.n/a
Main Authors: Suzuki, Susumu, Teranishi, Kenji, Itoh, Haruo
Format: Article
Language:English
Subjects:
Argon plasma
atmospheric argon plasma jet
Atmospheric pressure
Electric fields
Emission spectra
emission spectrum
Gas flow
Luminous intensity
Nozzles
Plasma jets
Position measurement
Spatial distribution
Ultraviolet spectra
vacuum ultra violet
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Summary:This paper describes the observed position dependent emission spectrum and vacuum ultraviolet (VUV) to clarify the optical structure of argon atmospheric pressure plasma jets (APJs). Visible emission spectra of argon, nitrogen, and OH molecules were measured as a function of position from the nozzle of plasma jet generator to gas flow direction. From the results, we realized that a certain electric field is required for producing high energy excited atoms of argon in the jet from the high voltage electrode in the device to the ground positioned at downstream side. Moreover, VUV was detected along the plasma jet through the downstream direction. Thus, we could picture that the light pattern of plasma jet of which intensity weaken depend to the distance from the nozzle is sustained by the above two factors with the present steady state experiments.
ISSN:0424-7760
1520-6416
DOI:10.1002/eej.23457