Echelle observations of C III lambda 1909 and SI III lambda 1892

Details Echelle observations of C III lambda 1909 and SI III lambda 1892 Echelle observations of C III lambda 1909 and SI III lambda 1892

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979soph...64...71a&link_type=abstract

Solar Physics, vol. 64, Nov. 1979, p. 71-75.

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Electron Density Profiles, Mass Transfer, Solar Electrons, Data Reduction, Echelle Gratings, Plasma Diagnostics, Rocket Sounding, Silicon, Solar Limb, Velocity Measurement

Scientific paper

Profiles of C III 1909 and Si III 1892 obtained on and near the limb during the 1976 flight of the University of Hawaii echelle rocket spectrograph were reduced and analyzed to determine electron densities and mass motions. The electron pressure derived agrees well with that determined by Cook and Nicolas (1979) from ATM data. Nonthermal velocities in the region of formation of Si III 1892 on the disk were found to be 10-12 km/s, somewhat lower than the values obtained by Doschek et al. (1976), also from ATM spectra. However, velocities derived at and above the limb were in closer agreement, about 17 km/s.

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