Abstract
Starting with the model of a quiet solar chrcmosphere, we have calculated the relative probabilities of radiative and natural population of the second and third hydrogen levels, pertinent to various population processes. our analysis indicates that, while the La line is formed by resonance scattering between the first two levels, the third hydrogen level, from which Lβ and Hα are generated, is populated partly by direct photoexcitation 1 → 3 (about 55%), and partly by two-photon absorption 1 → 2 → 3 (about 45%). These results suggest the correct form of the general emission profile for the hydrogen Lα-Lβ--Hα-system which contains various types of redistribution functions, recently derived in the literature. The partial redistribution line transfer, with the emission profile obtained in this way, should lead to an improvement of synthetic line profiles, namely for the solar Lβ line.
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© 1985 D. Reidel Publishing Company
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Heinzel, P., Hubený, I. (1985). Partial Redistribution Interlocking in the Solar Chromosphere. In: Beckman, J.E., Crivellari, L. (eds) Progress in Stellar Spectral Line Formation Theory. NATO ASI Series, vol 152. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5372-7_10
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DOI: https://doi.org/10.1007/978-94-009-5372-7_10
Publisher Name: Springer, Dordrecht
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