Parametric decay into ion cyclotron waves and drift waves in multi-ion species plasma
Journal Article
·
· Phys. Fluids; (United States)
Parametric decay processes near the ion cyclotron frequency are investigated experimentally and theoretically in multi-ion species plasmas. The relevant theoretical dispersion relation of the parametric coupling is derived, including the ion drift motion. Experimental data obtained in the Princeton L-4 device verify these theoretical predictions in some detail. In a helium-neon plasma, the relative ion drift motion excites electrostatic ion cyclotron waves (the kinetic ion-ion hybrid mode) when ..omega../sub 0/>..cap omega../sub He/ +..cap omega../sub Ne/. In a region of large density gradient, the ion drift motion also excites low-frequency drift waves when ..omega../sub 0/>..cap omega../sub He/+..omega..*. The experimental data are found to agree well with the theory. The relevance of these processes to ion cyclotron heating of fusion plasmas is discussed.
- Research Organization:
- Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08455
- DOE Contract Number:
- EY-76-C-02-3073
- OSTI ID:
- 5157537
- Journal Information:
- Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 23:8; ISSN PFLDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
ARGON
COLLISIONS
CRYOGENIC FLUIDS
CYCLOTRON FREQUENCY
DIELECTRIC PROPERTIES
DISPERSION RELATIONS
ELECTRICAL PROPERTIES
ELECTRON COLLISIONS
ELECTRON TEMPERATURE
ELECTRON-ION COLLISIONS
ELEMENTS
FLUIDS
HEATING
HELIUM
HIGH-FREQUENCY HEATING
ICR HEATING
INSTABILITY
INTERFEROMETRY
ION COLLISIONS
ION DRIFT
ION PLASMA WAVES
ION TEMPERATURE
ION WAVES
KRYPTON
MAGNETIC FIELDS
NEON
NONMETALS
PARAMETRIC INSTABILITIES
PHYSICAL PROPERTIES
PLASMA
PLASMA DENSITY
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA WAVES
PROBES
RARE GASES
700107* -- Fusion Energy-- Plasma Research-- Instabilities
700108 -- Fusion Energy-- Plasma Research-- Wave Phenomena
ARGON
COLLISIONS
CRYOGENIC FLUIDS
CYCLOTRON FREQUENCY
DIELECTRIC PROPERTIES
DISPERSION RELATIONS
ELECTRICAL PROPERTIES
ELECTRON COLLISIONS
ELECTRON TEMPERATURE
ELECTRON-ION COLLISIONS
ELEMENTS
FLUIDS
HEATING
HELIUM
HIGH-FREQUENCY HEATING
ICR HEATING
INSTABILITY
INTERFEROMETRY
ION COLLISIONS
ION DRIFT
ION PLASMA WAVES
ION TEMPERATURE
ION WAVES
KRYPTON
MAGNETIC FIELDS
NEON
NONMETALS
PARAMETRIC INSTABILITIES
PHYSICAL PROPERTIES
PLASMA
PLASMA DENSITY
PLASMA HEATING
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
PLASMA WAVES
PROBES
RARE GASES