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In this paper a method is developed to describe the change of polarisation of an electromagnetic wave traversing a non-uniform, magnetised plasma in terms of a 2 x 2 matrix. It is shown by model calculations that this transformation matrix yields the same results as those obtained by the well-established Poincaré sphere method. The formal equivalence of the plasma matrix to Jones matrices representing polarisation-sensitive optical components makes it possible to devise simple and versatile simulation programmes for real polarimetric instruments. As an example, the heterodyne polarimeter used on the TEXTOR tokamak is discussed.

Additional information

Authors: SOLTWISCH H, Forschungszentrum Jülich GmbH (KFA) (DE)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, Vol. 35 (1993) pp. 1777-1792
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