• Density dependence of solar emission lines of carbon-like ions

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      https://www.ias.ac.in/article/fulltext/pram/013/03/0319-0328

    • Keywords

       

      Density dependence; coronal emission lines; chromosphere; corona transition region; carbon-like ions; photo-excitation; solar plasma

    • Abstract

       

      Steady state level population of 15 levels of carbon-like ions: NeV, MgVII, SiIX, and SXI have been computed as a function of electron density and temperature taking into account collisional processes and spontaneous radiative ones. Photo-excitation among the ground term levels has also been considered. Knowing the level density, line intensities have been computed as a function of electron density and temperature. This study indicates that line intensity ratios for carbon-like ions can be used as a diagnostic in the determination of these two parameters of the solar plasma. The resulting line fluxes from these ions at earth distance are compared with observation.

    • Author Affiliations

       

      P K Raju1 B N Dwivedi1 2

      1. Indian Institute of Astrophysics, Bangalore - 560 034
      2. Applied Physics Section, Institute of Technology, Banaras Hindu University, Varanasi - 221 005
    • Dates

       
  • Pramana – Journal of Physics | News

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