Computer Science – Sound
Scientific paper
Dec 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.5685m&link_type=abstract
Journal of Geophysical Research, vol. 83, Dec. 1, 1978, p. 5685-5690.
Computer Science
Sound
13
Astronomical Spectroscopy, Helium, Rocket Sounding, Solar Spectra, Ultraviolet Astronomy, Far Ultraviolet Radiation, Line Spectra, Resonance, Spectral Line Width
Scientific paper
The intensity and profile of the helium resonance line at 584 A from the entire disk of the sun was investigated by using a rocket-borne helium-filled spectrometer and a curve-of-growth technique. The line profile was found to be accurately represented by a Gaussian profile with full width at half maximum of 122 + or - 10 mA, while the integrated intensity was measured to be 2.6 + or - 1.3 billion photons/s per sq cm at solar activity levels of F(10.7) = 90.8 x 10 to the -22nd per sq m/Hz and Rz = 27. The measured line width is in good agreement with previous spectrographic measurements, but the integrated intensity is larger than most previous photoelectric measurements. However, the derived line center flux of 20 + or - 10 billion photons/s per sq cm/A is in good agreement with values inferred from airglow measurements.
Carlson Richard W.
Hartmann Ulli G.
Judge Darrell L.
Maloy J. O.
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