Abstract
The solar eclipse of 12 November 1966 was used to study the coronal emission near the limbs in selected emission lines between 16 and 40 Å. Eight fixed-wavelength, curved crystal spectrometers were carried in each of 3 rocket launches to an altitude of 290 km and monitored the flux in each of eight narrow-wavelength intervals encompassing the principal emission lines from the hydrogen-like and helium-like ions of C, N, and O. At totality the emissions dropped to background levels of 1% or less of the full sun values, showing that on the solar limbs on that day there was very little emission above 17000 km in these lines.
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Work performed under the auspices of the U.S. Atomic Energy Commission.
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Argo, H.V., Bergey, J.A., Evans, W.D. et al. 16–40 Å coronal X-ray emission during the 12 November 1966 eclipse. Sol Phys 5, 551–563 (1968). https://doi.org/10.1007/BF00147020
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DOI: https://doi.org/10.1007/BF00147020