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The spectrum of light scattered by a plasma in a magnetic field consists of a sequence of peaks if the scattering vector k is almost perpendicular to the magnetic field B. Serious smearing of the peaks occurs when 2kv e cos pi >or= omega ce where pi is the angle between k and B. Hence the scattered light will exhibit modulation only within a thin angular wedge. The angular location of this wedge can be determined by using a Fabry-Perot or a Michelson interferometer and from this direction of the magnetic field can be determined. A generalized treatment is presented to allow for the interpretation of experimental results from any light scattering arrangement or plasma field configuration. The limits imposed on this diagnostic technique, such as the laser beam divergence and field uniformity are also derived.
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P. G. Carolan (1977) studied this question.
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