ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
Dual mode [ordinary–extraordinary (O–X)] correlation reflectometry has the potential advantage of being able to determine magnetic field strength, |B(underbar)|, simultaneously with correlation properties of turbulence (e.g., radial correlation length, coherency, power spectra, etc.). Controlled dual mode correlation reflectometry experiments, conducted in the Large Plasma Device at UCLA, are presented. The purpose of these experiments was (1) to demonstrate the proof of principle of |B(underbar)| measurement, and (2) to make detailed comparisons between dual mode and single mode (O–O,X–X) reflectometer, and Langmuir probe radial correlation measurements. It is shown that, in these experiments, |B(underbar)| can be determined from O–X correlation measurements, interpreted via a one-dimensional numerical model. In addition, good agreement is found between correlation lengths (within 10%–15%), coherency, and power spectra measured by O–X, O–O, and X–X reflectometry, and a Langmuir probe array. © 2001 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1319863
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