Experimental investigation of a microwave discharge in helium
Journal Article
·
· Sov. J. Plasma Phys. (Engl. Transl.); (United States)
OSTI ID:7304440
The electrodynamic and spectral characteristics of a helium plasma in a microwave discharge are studied. It is shown that the pronounced deviation from local thermodynamic equilibrium (electron number density and densities of higher excited states much less than LTE values) is due to spatial inhomogeneity of the plasma. There is evidence that slight impurities (approximately-less-than1%) of molecular gases strongly affect the discharge properties. On the basis of an analysis of the experimental data for microwave discharges in helium and argon it is suggested that a modified theory of the equilibrium microwave discharge be used to describe nonequilibrium microwave discharges.
- Research Organization:
- Institute of High Temperatures, Academy of Sciences of the USSR
- OSTI ID:
- 7304440
- Journal Information:
- Sov. J. Plasma Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Plasma Phys. (Engl. Transl.); (United States) Vol. 2:5; ISSN SJPPD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700104* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Experimental-- (-1987)
AMBIPOLAR DIFFUSION
CRYOGENIC FLUIDS
DIFFUSION
DOPPLER EFFECT
ELASTIC SCATTERING
ELECTRIC DISCHARGES
ELECTRON TEMPERATURE
ELEMENTS
EMISSION SPECTRA
EQUILIBRIUM
FLUIDS
HELIUM
HIGH-FREQUENCY DISCHARGES
IMPURITIES
INHOMOGENEOUS PLASMA
LINE BROADENING
LTE
MAGNETO-OPTICAL EFFECTS
NONMETALS
PLASMA
RARE GASES
SCATTERING
SPECTRA
STARK EFFECT
VOIGT EFFECT
700104* -- Fusion Energy-- Plasma Research-- Plasma Kinetics-Experimental-- (-1987)
AMBIPOLAR DIFFUSION
CRYOGENIC FLUIDS
DIFFUSION
DOPPLER EFFECT
ELASTIC SCATTERING
ELECTRIC DISCHARGES
ELECTRON TEMPERATURE
ELEMENTS
EMISSION SPECTRA
EQUILIBRIUM
FLUIDS
HELIUM
HIGH-FREQUENCY DISCHARGES
IMPURITIES
INHOMOGENEOUS PLASMA
LINE BROADENING
LTE
MAGNETO-OPTICAL EFFECTS
NONMETALS
PLASMA
RARE GASES
SCATTERING
SPECTRA
STARK EFFECT
VOIGT EFFECT