Abstract
The major wavelength areas of interest to upper atmospheric physics are:
-
(i)
The broad Schumann continuum from 1350–1750 Å, the far-ultraviolet responsible for the dissociation of O2.
-
(ii)
The whole Spectrum from 1350–100 Å, which contributes to the ionization of the upper ionosphere. This region includes:
-
(a)
Lα at 1216 Å responsible for the production of quiet day D-region,
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(b)
He I (584 Ã…) and He II (304 Ã…) lines, which are quite prominent, and contribute substantially to F-region ionization.
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(a)
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(iii)
X-rays above 8 Ã…, contributing to the lower E region.
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(iv)
X-rays below 8 Ã…, negligible under quiet conditions, but the main source of flare time D-region ionization.
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© 1974 D. Reidel Publishing Company, Dordrecht, Holland
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Mitra, A.P. (1974). Flare Radiations Responsible for Ionospheric Effects. In: Ionospheric Effects of Solar Flares. Astrophysics and Space Science Library, vol 46. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2231-6_3
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DOI: https://doi.org/10.1007/978-94-010-2231-6_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-2233-0
Online ISBN: 978-94-010-2231-6
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