Dielectronic satellite spectra for highly charged heliumlike ions. V  Effect of total satellite contribution on the solar flare iron spectra
Abstract
For satellites of the type 1s^{2}nl1s 2pnl in Fe XXIV, wavelengths and intensities have been calculated for n = 4. Together with previous calculations for n = 2 and 3, these enable the wavelengths and decay rates to be scaled for higher values of n. The series up to n = 11 for satellites of the resonance line 1s^{2} 1s2p ^{1}P_{1}, and up to n = 16 for satellites of the inter combination line 1s^{2}ls 2p ^{3}P_{1}, have been derived. This leads to a good estimate for the contribution of satellites to the apparent wavelength shift, width, and intensity of the resonance line, and thus to a value of the correction factor a needed for deriving electron temperature from satellite! resonance line ratios, as described in Papers I and II in this series. Also obtained, from the sum of all the satellites, is a new value for the major contribution ( 90 per cent) to the total dielectronic recombination rate. At typical flare temperatures of 20 × 10^{6} K, this is greater by a factor of two than values obtained from earlier semiempirical formulae.
 Publication:

Monthly Notices of the Royal Astronomical Society
 Pub Date:
 December 1979
 DOI:
 10.1093/mnras/189.4.801
 Bibcode:
 1979MNRAS.189..801B
 Keywords:

 Electron Transitions;
 Iron;
 Solar Flares;
 Solar Spectra;
 Line Spectra;
 Solar Physics;
 Transition Probabilities;
 Wavelengths;
 X Ray Spectra;
 Solar Physics