Abstract
At frequencies close to that of a spectral line, a gaseous medium shows not only a rapid variation with frequency of absorption coefficient but also of refractive index. This anomalous dispersion is particularly important in the analysis of lines formed in the presence of a magnetic field. The differently split components of the line have different dispersions which leads to a rotation of the axes of the polarization ellipse as the radiation traverses the medium.
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© 1977 D. Reidel Publishing Company, Dordrecht, Holland
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Durrant, C.J. (1977). General Theoretical Terms. In: Bruzek, A., Durrant, C.J. (eds) Illustrated Glossary for Solar and Solar-Terrestrial Physics. Astrophysics and Space Science Library, vol 69. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-1245-4_12
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DOI: https://doi.org/10.1007/978-94-010-1245-4_12
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