A High Resolution Solar Ultraviolet Spectrum between 200 and 220 nm

Details A High Resolution Solar Ultraviolet Spectrum between 200 and 220 nm A High Resolution Solar Ultraviolet Spectrum between 200 and 220 nm

Jul 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971rspta.270...29b&link_type=abstract

Philosophical Transactions for the Royal Society of London. Series A, Mathematical and Physical Sciences, Volume 270, Issue 1202

Physics

7

Scientific paper

A high resolution solar spectrum in the range 200 to 220 nm has been recorded with an echelle spectrograph launched in a sun-pointing Skylark rocket. The data have been reduced and are presented as intensity-wavelength plots together with a wavelength list and proposed identifications. A broad absorption feature at 212.4 nm is assigned to a single source and an intensity analysis confirms this to be the non-resonance Si I line at 212.412 nm. The discontinuity in the continuum intensity near 208.7 nm is revealed with high resolution for the first time and is assigned to the photoionization edge of Al I. An analysis shows that its intensity drop and wavelength position can only be explained by adjustments to the solar model in the region 0.001 < T5000 < 0.2.

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