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Title: Density and temperature diagnostics of solar emission lines from NA VII and AL IX
Authors: Raju, P. K
Dwivedi, B. N
Gupta, A. K
Keywords: Aluminum;Chromosphere;Emission Spectra;Line Spectra;Plasma Density;Plasma Diagnostics;Plasma Temperature;Sodium;Solar Corona;Solar Electrons;Solar Spectra;Stellar Models;Ultraviolet Astronomy;Ultraviolet Spectra;Astronomical Spectroscopy;Atmospheric Models;Collision Parameters;Electron Density (Concentration);Electron Pressure;Extreme Ultraviolet Radiation;Ions;Mathematical Models;Radiative Transfer;Soho Mission;Solar Atmosphere;Solar Cycles;Ultraviolet Spectromete
Issue Date: Feb-1994
Publisher: Springer
Citation: Solar Physics, Vol. 149, No. 2, pp. 289 - 299
Abstract: Line intensity ratios of extreme ultraviolet (EUV) emission lines from Na VII and Al IX have been considered for electron density and temperature determinations within the chromosphere-corona transition region and the corona. The electron pressure within the emission region has been assumed to be a constant parameter. Theoretical line intensities for these ions have been computed using a model solar atmosphere and compared with the values as observed by the Apollo Telescope Mount (ATM) ultraviolet spectrometer. The observed intensities correspond to the average quiet-Sun conditions near solar minimum.
ISSN: 0038-0938
Appears in Collections:IIAP Publications

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