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Si VII/Mg VII and Si IX/Mg IX line diagnostics for solar plasma

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Abstract

New calculations for Si vii/Mg vii and Si ix/Mg ix theoretical line ratios as a tool for plasma density diagnostics and for the estimation of relative element abundance in the solar atmosphere are presented, making use of the EUV spectrum of an active region obtained by the Solar EUV Rocket Telescope and Spectrograph (SERTS). Theoretical line ratios, hitherto not observed, are discussed for diagnosing solar plasma from the observations obtainable with the Coronal Diagnostic Spectrometer (CDS) instrument on board the SOHO mission.

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Authors and Affiliations

  1. Department of Applied Physics, Institute of Technology, Banaras Hindu University, 221005, Varanasi, India

    Anita Mohan & B. N. Dwivedi

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  1. Anita Mohan
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  2. B. N. Dwivedi
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In the honour of Dr P. K. Raju, Indian Institute of Astrophysics, Bangalore, on the completion of his 60 years.

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Mohan, A., Dwivedi, B.N. Si VII/Mg VII and Si IX/Mg IX line diagnostics for solar plasma. Sol Phys 167, 145–151 (1996). https://doi.org/10.1007/BF00146333

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  • DOI: https://doi.org/10.1007/BF00146333

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