Spatial resolution of microwave/millimeter-wave reflectometry

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Review of Scientific Instruments; (USA)

DOI:https://doi.org/10.1063/1.1141763· OSTI ID:6308796

Baang, S; Domier, C W; Luhmann, Jr, N C; Peebles, W A; Rhodes, T L ^[1]

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1. Institute of Plasma and Fusion Research, Electrical Engineering Department, University of California, Los Angeles, CA (USA)

Reflectometry is currently being used to investigate density fluctuations and turbulence in tokamak plasmas. However, there are unresolved questions about the spatial resolution and wave number sensitivity of this diagnostic method which impact the interpretation of the data. These questions are currently being addressed in a cylindrical, pulsed filament discharge plasma where ion acoustic waves (10--100 kHz) are launched toward the incident microwaves. Preliminary data supporting the spatially localized nature of reflectometry are presented. A computational model is also being developed to provide quantitative comparisons with experiment.

• DOE Contract Number: FG03-86ER53225
• OSTI ID: 6308796
• Journal Information: Review of Scientific Instruments; (USA), Vol. 61:10; ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA DIAGNOSTICS
LANGMUIR PROBE
FAR INFRARED RADIATION
ION ACOUSTIC WAVES
LIGHT SCATTERING
MICROWAVE RADIATION
OPTICAL EQUIPMENT
PLASMA DENSITY
REFLECTIVITY
RESOLUTION
ELECTRIC PROBES
ELECTROMAGNETIC RADIATION
EQUIPMENT
INFRARED RADIATION
ION WAVES
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA WAVES
PROBES
RADIATIONS
SCATTERING
SURFACE PROPERTIES
700102* - Fusion Energy- Plasma Research- Diagnostics