Numerical study of the auroral particle transport in the polar upper   atmosphere

doi:10.1007/s11431-008-0216-4

CORC > 北京大学 > 地球与空间科学学院

	Numerical study of the auroral particle transport in the polar upper atmosphere
	Cai HongTao ; Ma ShuYing ; Pu ZuYin
刊名	中国科学e辑技术科学
	2008
关键词	aurora particle precipitation polar upper atmosphere electron transport equation numerical simulation CHARACTERISTIC ELECTRON-ENERGY HYDROGEN ATOM AURORA THEORETIC MODEL MONTE-CARLO DEPOSITION DEGRADATION FLUXES FUV IONOSPHERE IONIZATION
DOI	10.1007/s11431-008-0216-4
英文摘要	Starting from the Boltzmann equation and with some reasonable assumptions, a one-dimensional transport equation of charged energetic particles is derived by taking account of major interactions with neutral species in the upper atmosphere, including the processes of elastic scattering, the excitation, the ionization and the secondary electron production. The transport equation is numerically solved, for a simplified atmosphere consisting only of nitrogen molecules (N(2)), to obtain the variations of incident electron fluxes as a function of altitude, energy and pitch angle. The model results can describe fairly the transport characteristics of precipitating auroral electron spectra in the polar upper atmosphere; meanwhile the N(2) ionization rates calculated from the modeled differential flux spectra also exhibit good agreements with existing empirical models in terms of several key parameters. Taking the energy flux spectra of precipitating electrons observed by FAST satellite flying over EISCAT site on May 15, 1997 as model inputs, the model-calculated ionization rate profile of neutral atmosphere consists reasonably with that reconstructed from electron density measurements by the radar.; Engineering, Multidisciplinary; Materials Science, Multidisciplinary; SCI(E); EI; 1; ARTICLE; 10,SI; 1759-1771; 51
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/248647]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Cai HongTao,Ma ShuYing,Pu ZuYin. Numerical study of the auroral particle transport in the polar upper atmosphere[J]. 中国科学e辑技术科学,2008.
APA	Cai HongTao,Ma ShuYing,&Pu ZuYin.(2008).Numerical study of the auroral particle transport in the polar upper atmosphere.中国科学e辑技术科学.
MLA	Cai HongTao,et al."Numerical study of the auroral particle transport in the polar upper atmosphere".中国科学e辑技术科学 (2008).