Abstract
New values of hydrogen photoionization rates for subordinate continua arising from bound levels with the principal quantum number i = 2–5 have been evaluated numerically, using an extensive compilation of the observed photospheric radiation fields. These rates can be directly incorporated into the equations of statistical equilibrium as so-called fixed rates. We tabulate the photoionization rates and equivalent radiation temperatures for various heights above the photosphere, which is particularly useful for chromospheric and prominence non-LTE modeling. Finally, we compare our results with those previously obtained by other authors.
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Rudawy, P., Heinzel, P. Hydrogen photoionization rates for chromospheric and prominence plasmas. Sol Phys 138, 123–131 (1992). https://doi.org/10.1007/BF00146200
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DOI: https://doi.org/10.1007/BF00146200