ION-PICKUP MECHANISM AND TWO-STREAM INSTABILITY IN COMET

作     者：Pang Yongjiang Li Zhongyuan Liu Yuan (University of Science and Technology of China Anhui, Hefei 230026) (Advanced Center for Earth Science and Astronomy, Third World Academy of Science) 

出 版 物：《中国科学院上海天文台年刊》 (Annals Shanghai Astronomical Observatory Chinese Academy of Sciences)

年 卷 期：2000年

页      面：194-200页

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：theNationalNaturalScienceFoundationofChinaUnderGrant (No .199730 18& 196 5 30 0 1) 

主　　题：comet - cometary tail - instability of plasmas - ion acceleration 

摘      要：In this paper, we adopted a reasonable particle distribution function and used a simplified judgement to analyze the possibility of the ion-pickup caused by two-stream instibility in cometary tail. On calculation, we get an energy limitation(ΔE 1, ΔE 2) between the solar wind particles and the cometary particles .When the energy diffference is between ΔE 1 and ΔE 2, the pickup of ions in the cometary tail is more effective.