Mutual interaction of Faraday rotation and Cotton–Mouton phase shift in JET polarimetric measurements
- 1 October 2010
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 81 (10), 10D533
- https://doi.org/10.1063/1.3502039
Abstract
The paper presents a study of Faraday rotation (FR) angle and Cotton–Mouton (CM) phase shift measurements to determine their mutual interaction and the validity of the linear models presently used in equilibrium codes. Comparison between time traces of measurements and model calculations leads to the result that only an exact numerical solution of Stokes equations can reproduce in all the experimental data. As a consequence, approximated linear models can be applied only in a limited range of plasma parameters. In general, the nonlinear coupling between FR and CM is important for the evaluation of polarimetry parameters.This publication has 4 references indexed in Scilit:
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- Approximate method to extract the pure Faraday and Cotton–Mouton effects from polarimetry measurements in a tokamakPlasma Physics and Controlled Fusion, 2004
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