Hydrogen photoionization rates for chromospheric and prominence plasmas |
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| Authors: | P Rudawy P Heinzel |
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| Institution: | (1) Astronomical Institute of the Wroc aw University, 51-622 Wrocaw, Poland;(2) Astronomical Institute, 251-65 Ond ejov, Czechoslovakia |
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| 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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