Ionospheric effects of solar flares. V. The flare event of 30 January 1968 and its implications

Deshpande, S. D. ; Ganguly, S. ; Jain, V. C. ; Mitra, A. P. (1972) Ionospheric effects of solar flares. V. The flare event of 30 January 1968 and its implications Journal of Atmospheric and Terrestrial Physics, 34 (2). pp. 267-281. ISSN 0021-9169

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002191...

Related URL: http://dx.doi.org/10.1016/0021-9169(72)90169-9

Abstract

From riometer and pulse absorption measurements on three frequencies for the large X-ray flare event that occurred on 30 January 1968, electron density profiles are derived for the entire course of the flare. The time variation of the electron production rate is obtained for this event from satellite measurements of X-rays in the bands 0–3 Å, 0–8 Å and 8–20 Å. A comparison of these profiles with the electron production rates deduced from the X-rays reveals a decrease in the effective recombination coefficient or of the negative ion to electron ratio λ, in agreement with the results reported by Rowe et al. (1970).

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