中性气体释放人工产生气辉

	中性气体释放人工产生气辉
	黄文耿 ; 古士芬
刊名	空间科学学报
	2006
卷号	26 期号:2 页码:81-85
关键词	化学释放电离层F区扩散气辉
ISSN号	0254-6124
其他题名	Artifically Created Airglow by Neutral Gas Release
通讯作者	北京8701信箱
中文摘要	电离层中分子性的离子与电子的复合要比氧离子与电子的辐射性复合快得多,因此火箭发动机产生的尾气和空间等离子体主动实验中主动释放的中性气体会对电离层有很大的影响,这么大的电离层扰动现象在过去的实验中经常可以观测到.根据中性气体在热层背景中的扩散方程,考虑电离层F,区主要的离子化学反应,研究了H2,H2O和CO2气体在电离层高度上的扩散过程和电离层对所释放气体的响应,计算了气辉的体发射系数和发射强度,结果表明,中性气体在电离层高度上扩散非常迅速,在F区的一些高度上,主要正离子成分由O^＋转变为其他分子离子,且在释放过程中伴随气辉发射,发射气辉的波长和特征与释放物质的种类有关.
英文摘要	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 molecularion with electron are several orders greater than that of the dominant atomic oxygen ion in ionosphere Fregion.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, H20 and COZ and iono:>pheric 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 dif}'usi.on 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 Fregion, the dominant positive ion converts into other molecular ion, such as H20+.During the diffusion process, airglow will be excited, and its wavelength and emission characteristics depend on the released materials.
学科主题	空间环境
收录类别	CSCD
资助信息	中国科学院空间科学与应用研究中心创新课题资助
语种	中文
CSCD记录号	CSCD:2325587
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/466]
专题	国家空间科学中心_空间环境部
推荐引用方式 GB/T 7714	黄文耿,古士芬. 中性气体释放人工产生气辉[J]. 空间科学学报,2006,26(2):81-85.
APA	黄文耿,&古士芬.(2006).中性气体释放人工产生气辉.空间科学学报,26(2),81-85.
MLA	黄文耿,et al."中性气体释放人工产生气辉".空间科学学报 26.2(2006):81-85.