Physics – Optics
Scientific paper
Jan 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977lock.reptq....k&link_type=abstract
Final Report Lockheed Missiles and Space Co., Sunnyvale, CA. Electro-Optics Lab.
Physics
Optics
H Alpha Line, Solar Flares, Solar Spectra, Spectrum Analysis, Sun, Doppler Effect, Electron Energy, Solar Electrons, Solar Velocity, Tables (Data)
Scientific paper
Spectrographs of the H-alpha line taken at 15 second intervals from the event of 5 Sept. 1973 were interpreted by comparison with synthetic profiles. A sequence of 27 high resolution H alpha profiles was obtained from the second brightest flare kernel. The profiles were generally self reversed with a maximum peak intensity of 1.16 x continuum and a maximum central intensity of .91 x continuum. The line characteristics such as red and violet peak intensities and positions, center shifts and wing intensities were tabulated. Synthetic H-alpha profiles were generated from a finite layer assuming simple parameteric forms for the source function and velocity field. The velocity chosen always decreased with optical depth and had the same sign. For absorption profiles, bisector shifts were calculated for a variety of velocities. The velocity field and source function were derived as a function of optical depth and time.
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