Plasma gas velocities in an argon jet at atmospheric pressure

The optical emission intensity in a low-swirl transient argon plasma jet at atmospheric pressure has been analyzed to determine plasma gas velocities along the center axis in a region from 0 to 10 mm from the jet exit. An abrupt decrease at about 4 mm from the jet exit is observed under all gas-flow...

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Bibliographic Details
Published in:Journal of quantitative spectroscopy & radiative transfer 1992-07, Vol.48 (1), p.105-110
Main Authors: Dong, J., Kearney, R.J.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma devices
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Summary:The optical emission intensity in a low-swirl transient argon plasma jet at atmospheric pressure has been analyzed to determine plasma gas velocities along the center axis in a region from 0 to 10 mm from the jet exit. An abrupt decrease at about 4 mm from the jet exit is observed under all gas-flow and current conditions. Measurements on a second low-swirl jet with somewhat different anode-cathode geometry did not show such a transition in this spatial region and indicate that the results are very dependent on torch geometry.
ISSN:0022-4073
1879-1352
DOI:10.1016/0022-4073(92)90010-2