| Theoretical Study on Ion Escape in Martian Atmosphere |
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| 作者姓名： | 史建魁 刘振兴 Klaus TORKAR Tielong ZHANG |
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| 作者单位： | [1]State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080 [2]Space Research Institute, Austrian Academy of Sciences, A-8042, Graz, Austria |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant under No 40374057, and the International Collaboration Research Team Programme of Chinese Academy of Sciences. |
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| 摘 要： | Based on the observation that Martian magnetic moment is gradually reducing from the ancient to the present, we investigate the O^＋ ion flux distribution along magnetic field lines and the ion escaping flux in Martian tail with different assumed Martian magnetic moments. The results show that the O^＋ ion flux along magnetic field lines decreases with distance from Mars; the ion flux along the field line decreases more quickly if the magnetic moment is larger; the larger the magnetic moment, the smaller the ion escaping flux in the Martian tail. The ion escaping flux depends on Z-coordinate in the Martian tail. With decrease of the magnetic moment, the ion escaping flux in the Martian tail increases. The results are significant for studying the water loss from Mars S uFface.
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| 关 键 词： | 离子逃避 理论学习 火星 大气圈 |
| 修稿时间： | 2006-09-25 |
Theoretical Study on Ion Escape in Martian Atmosphere |
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| SHI Jian-Kui,LIU Zhen-Xing,Klaus TORKAR,Tielong ZHANG.Theoretical Study on Ion Escape in Martian Atmosphere[J].Chinese Physics Letters,2007,24(1):298-301. |
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| Authors: | SHI Jian-Kui LIU Zhen-Xing Klaus TORKAR Tielong ZHANG |
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| Institution: | State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080
Space Research Institute, Austrian Academy of Sciences, A-8042, Graz, Austria |
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| Abstract: | Based on the observation that Martian magnetic moment is gradually reducing from the ancient to the present, we investigate the O+ ion flux distribution along magnetic field lines and the ion escaping flux in Martian tail with different assumed Martian magnetic moments. The results show that the O+ ion flux along magnetic field lines decreases with distance from Mars; the ion flux along the field line decreases more quickly if the magnetic moment is larger; the larger the magnetic moment, the smaller the ion escaping flux in the Martian tail. The ion escaping flux depends on Z-coordinate in the Martian tail. With decrease of the magnetic moment, the ion escaping flux in the Martian tail increases. The results are significant for studying the water loss from Mars surface. |
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| Keywords: | 96 30 Gc 94 30 Vf 96 25 Ln |
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