The height distribution of the kinetic temperature and turbulent velocity of solar H-alpha spicules

Details The height distribution of the kinetic temperature and turbulent velocity of solar H-alpha spicules The height distribution of the kinetic temperature and turbulent velocity of solar H-alpha spicules

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988soph..117...21m&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 117, no. 1, 1988, p. 21-36.

Physics

18

H Alpha Line, Solar Temperature, Spectral Line Width, Spicules, Temperature Distribution, Extreme Ultraviolet Radiation, Metallicity, Velocity Distribution

Scientific paper

The height distribution of the kinetic temperature of solar Hα spicules is determined using the widths of optically thin hydrogen and metallic lines obtained at the total solar eclipse of 1966: the temperature was found to be 8600K at the height of 2200 km measured from the radial optical depth of unity at 5000 Å, and to decrease to a minimum of 5000K±180K at 3200 km, and to increase again to 8200K at 6000 km. The height distribution of the non-thermal turbulent velocity is also determined, and is shown to be consistent with the neutral helium line widths emitted at the kinetic temperature of 5000 - 8000K.

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