By A. D. Danilov (auth.)
I was once more than happy to benefit that Plenum Press has made up our minds to post an English variation of Chemistry of the Ionosphere. even supposing the booklet used to be mostly meant for the Soviet reader as a way to fill a few gaps in Russian-language stories on aeronomic difficulties, i'm hoping that it can be beneficial to overseas experts engaged in iono spheric study in addition. clearly, in the course of the time which has elapsed because the coaching of the Russian version new reports were released on the planet literature at the difficulties handled during this e-book. crucial of those are famous within the ap pendix to this variation, yet a few difficulties (for instance, with recognize to the physics of unfavorable ions within the decrease ionosphere) require a thorough reexamination, which can't be performed in a quick appendix. i'll be happy if e-book of the booklet in English will as sist in elimination many of the presently current ambiguities in easy difficulties of higher surroundings chemistry. A. D. Danilov Preface to the Russian variation 1 within the final decade superb successes were completed within the examine of the earth's higher surroundings via use of rockets and synthetic satellites. those investigations have made it transparent that the higher surroundings (and quite the ionospheric quarter at altitudes 100-1000 km) is a significantly extra complicated formation than can be visualized ahead of the arrival of lively reviews with area vehicles.
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Extra resources for Chemistry of the Ionosphere
O2 Ionization tlueshold. from . A. • • • . . . 7 positive ions and electrons, but the total neutralization rate at these altitudes will be dependent on processes of interaction between positive and negative ions (see Chap. 6). 2. Ionization of Neutral Particles The principal source of particle ionization in the earth's upper atmosphere, according to modern concepts, is solar UV radiation. 2); therefore, radiation with a lesser wavelength may lead to formation of ions and electrons in the upper atmosphere.
These data were obtained in a study by Hinteregger et al. . 6. I values given in the tables include both the energy in the continuous spectrum and in the principal emission lines in the considered region. 8 apply to 1960 [571. The problem of varia- 24 RESULTS OF ROCKET INVESTIGATIONS [CHAP. 1 tions in solar short-wave radiation intensity during the solar activity cycle has not yet been investigated adequately. 5-2. 2 A)J this decrease was somewhat greater. It apparently must be expected that from the maximum to the minimum of activity the intensity of solar UV radiation with A.
4°. The results of computations of qo' qN" and qo" according to data in , are given in Fig. 4. In computing the ionization rates for different atmospheric components Hinteregger et al.  used data on the neutral composition of the atmosphere at altitudes 100-235 lan, obtained from an analysis of solar UV radiation absorption in a rocket launching of July 10, 1963 (see Chap. 1). These data on neutral composition, as is clear from Figs. 3, agree well with the most reliable data on the distribution of neutral particle concentrations in the region 100-200 km.