Theoretical Study on Ion Escape in Martian Atmosphere
SHI Jian-Kui1, LIU Zhen-Xing1, Klaus TORKAR2, Tielong ZHANG2
1State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080
2Space Research Institute, Austrian Academy of Sciences, A-8042, Graz, Austria
Theoretical Study on Ion Escape in Martian Atmosphere
SHI Jian-Kui1;LIU Zhen-Xing1;Klaus TORKAR2;Tielong ZHANG2
1State Key Laboratory for Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100080
2Space Research Institute, Austrian Academy of Sciences, A-8042, Graz, Austria
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.
SHI Jian-Kui;LIU Zhen-Xing;Klaus TORKAR;Tielong ZHANG. Theoretical Study on Ion Escape in Martian Atmosphere[J]. 中国物理快报, 2007, 24(1): 298-301.
SHI Jian-Kui, LIU Zhen-Xing, Klaus TORKAR, Tielong ZHANG. Theoretical Study on Ion Escape in Martian Atmosphere. Chin. Phys. Lett., 2007, 24(1): 298-301.
2007, Vol. 24 
