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《Chinese Journal of Space Science》 2006-02
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Artificially Created Airglow by Neutral Gas Release

HUANG Wengeng GU Shifen (Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080)  
In case of injection of neutral gases into ionosphere, atomic oxygen ions undergo charge transfer reactions with these injected molecules. The recombination rate coefficients of molecular ion with electron are several orders greater than that of the dominant atomic oxygen ion in ionosphere F region. Therefore, rockets exhaust gases produced by engine and artificially released neutral gases in the space active plasma experiments can substantially affect ionosphere, for example, the formation of electron depletion region, which is referred to as ionospheric holes, and these phenomena have been observed in many experiments. In this paper, in terms of diffusion equation of neutral gas in thermosphere and main ion-chemistry reactions in ionospheric F region, the diffusion processes of H2, H2O and CO2 and ionospheric response to released gases are investigated. Additionally, airglow volume emission rates and intensity from the release at ionospheric altitudes are calculated The results show that the diffusion of released neutral gas in F region is very quick, and these gas molecules can cause a large-scale depletion of ionospheric electron density. At some altitudes of F region, the dominant positive ion converts into other molecular ion, such as H2O+. During the diffusion process, airglow will be excited, and its wavelength and emission characteristics depend on the released materials.
【Fund】: 中国科学院空间科学与应用研究中心创新课题资助(2401175)
【CateGory Index】: P352
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Chinese Journal Full-text Database 1 Hits
1 Hu Yao-Gai Zhao Zheng-Yu Zhang Yuan-Nong (College of Electronic Information,Wuhan University,Wuhan 430079,China);Disturbance effects of some representative chemical releases in ionosphere[J];Acta Physica Sinica;2010-11
Chinese Journal Full-text Database 1 Hits
1 HUANG Wengeng GU Shifen (Center for Space Science and Applied Research, The Chinese Academy of Sciences, Beijing 100080);Ionospheric Disturbances Produced by Artificially Chemical Releases[J];Chinese Journal of Space Science;2005-04
【Secondary References】
Chinese Journal Full-text Database 2 Hits
1 Hu Yao-GaiZhao Zheng-Yu Xiang Wei Zhang Yuan-Nong (College of Electronic Information, Wuhan University, Wuhan 430079, China);Morphological control of artificial ionospheric hole and its short-wave propagation effects[J];Acta Physica Sinica;2011-09
2 HU Yaogai,ZHAO Zhengyu,XIANG Wei School of Electronic Information,Wuhan University,Wuhan 430072,Hubei,China;Radio Wave Propagation Effects Produced by Chemical Releases in the Ionosphere[J];武汉大学自然科学学报(英文版);2011-03
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