Several plasma diagnostics techniques measure the line integrals of quantities such as densities and optical, ultraviolet, and X-ray emission. Some approaches for reconstructing the local quantities from their line integrals, based on methods utilized in computerized tomography, electron microscopy, holographic interferometry, and radio astronomy, are derived and presented. Results for the special cases with source functions possessing helical symmetry-ranging from DNA to MHD-are emphasized.
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Sauthoff et al. (1979) studied this question.
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