Effects of turbulent fluctuations on density measurements with microwave reflectometry in tokamaks (abstract)

Journal Article · Sat Dec 31 23:00:00 EST 1994 · Review of Scientific Instruments; (United States)

DOI:https://doi.org/10.1063/1.1146251· OSTI ID:7060122

Mazzucato, E; Nazikian, R ^[1]

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1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)

The short-scale turbulence of tokamak plasmas has deleterious effects on the measurement of plasma density with microwave reflectometry. Density fluctuations may lead to large amplitude and phase modulations of the reflected wave which can impair the measurement of the wave group delay, and hence the determination of the plasma density. The role played by different types of turbulent fluctuations and the limitations imposed on microwave reflectometry are discussed.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7060122
• Journal Information: Review of Scientific Instruments; (United States), Journal Name: Review of Scientific Instruments; (United States) Vol. 66:1; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320* -- Plasma Diagnostic Techniques & Instrumentation-- (1992-)
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
CLOSED PLASMA DEVICES
ELECTROMAGNETIC RADIATION
FLUCTUATIONS
MICROWAVE RADIATION
PLASMA DENSITY
PLASMA DIAGNOSTICS
RADIATIONS
REFLECTION
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TURBULENCE
VARIATIONS