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Density dependence of the line emission of boron-like coronal ions

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Abstract

Assuming steady state conditions, we calculated the occupation of 20 levels of the ion Six as a function of the electron density and temperature taking into account collisional processes and spontaneous radiative ones. Between the two levels of the ground state also the photo-absorption of the corresponding infrared radiation has been considered. The emission of the most important UV-, X- and IR-lines is determined as a function of the electron density and temperature. Intensity ratios are plotted versus electron density. The line emission as a function of the height of the radiating layers is studied for UV- and X-ray lines. The resulting fluxes in earth distance are compared with observations.

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Authors and Affiliations

  1. Lehrstuhl für Theoretische Astrophysik der Universität Tübingen, Germany

    G. Elwert & P. K. Raju

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  1. G. Elwert
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  2. P. K. Raju
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Elwert, G., Raju, P.K. Density dependence of the line emission of boron-like coronal ions. Astrophys Space Sci 38, 369–375 (1975). https://doi.org/10.1007/BF00647137

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  • DOI: https://doi.org/10.1007/BF00647137

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