Electron-temperature and electron-density profiles in an atmospheric-pressure argon plasma jet

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States)

DOI:https://doi.org/10.1103/PhysRevE.50.519· OSTI ID:7103298

Snyder, S C; Reynolds, L D; Fincke, J R; Lassahn, G D; Grandy, J D; Repetti, T E ^[1]

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1. Idaho National Engineering Laboratory, EG G Idaho, Inc., P.O. Box 1625, Idaho Falls, Idaho 83415 (United States)

Line-shape analysis of the electron feature of Thomson-scattered laser light has been used to directly determine electron-temperature and electron-density profiles of an atmospheric-pressure argon plasma jet. Measured center line values of the electron temperature are in excess of 20 000 K at the torch exit, and remain essentially constant with increasing axial distance even though the plasma is recombining. These results are shown to be inconsistent with Saha equilibrium and classical electron-ion momentum transfer theory.

• DOE Contract Number: AC07-76ID01570
• OSTI ID: 7103298
• Journal Information: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States), Journal Name: Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics; (United States) Vol. 50:1; ISSN PLEEE8; ISSN 1063-651X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320 -- Plasma Diagnostic Techniques & Instrumentation-- (1992-)
700350* -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
ARGON
ATMOSPHERIC PRESSURE
ELECTROMAGNETIC RADIATION
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELEMENTS
FLUIDS
GASES
INELASTIC SCATTERING
LASER RADIATION
NONMETALS
PLASMA DIAGNOSTICS
PLASMA JETS
PLASMA RADIAL PROFILES
RADIATIONS
RARE GASES
SCATTERING
THOMSON SCATTERING