Microwave reflectometry for the study of density fluctuations in tokamak plasmas
The effect of small scale density fluctuations on the propagation of electromagnetic waves in an inhomogeneous magnetized plasma in the presence of a cutoff is investigated. It is shown that, provided the fluctuation scale length is greater than the free space wavelength of an incident plane wave, the scattered field is strongly enhanced from fluctuations near the turning point. Numerical results for wave propagation in a tokamak plasma demonstrate the feasibility of reflectometry for the localized measurement of density fluctuations in the range k {sub {perpendicular}} {rho}{sub i} {much lt} 1. 19 refs., 6 figs,
- Research Organization:
- Princeton Univ., NJ (USA). Plasma Physics Lab.
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 6377672
- Report Number(s):
- PPPL-2731; ON: DE91004967
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ELECTROMAGNETIC RADIATION
EQUATIONS
FIELD EQUATIONS
FLUCTUATIONS
INHOMOGENEOUS PLASMA
MAGNETIC FIELDS
MEASURING METHODS
MICROWAVE RADIATION
PLASMA
PLASMA DENSITY
PLASMA WAVES
RADIATIONS
TFTR TOKAMAK
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
VARIATIONS
WAVE PROPAGATION
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
ELECTROMAGNETIC RADIATION
EQUATIONS
FIELD EQUATIONS
FLUCTUATIONS
INHOMOGENEOUS PLASMA
MAGNETIC FIELDS
MEASURING METHODS
MICROWAVE RADIATION
PLASMA
PLASMA DENSITY
PLASMA WAVES
RADIATIONS
TFTR TOKAMAK
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
VARIATIONS
WAVE PROPAGATION