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Detection of m/q=2 pickup ions in the plasma environment of the Moon: The trace of exospheric H-2(+)
Wang, X. -D.1,2; Zong, Q. -G.3; Wang, J. -S.4; Cui, J.1; Reme, H.5; Dandouras, I.5; Aoustin, C.5; Tan, X.1; Shen, J.1; Ren, X.1; Liu, J. -J.1; Zuo, W.1; Su, Y.1; Wen, W. -B.1; Wang, F.1; Fu, Q.1; Mu, L. -L.1; Wang, X. -Q.1; Geng, L.1; Zhang, Z. -B.1; Liu, J. -Z.1; Zhang, H. -B.1; Li, C. -L.1; Ouyang, Z. -Y.1
2011-07-16
Source PublicationGEOPHYSICAL RESEARCH LETTERS
Volume38
AbstractThe Solar Wind Ion Detectors (SWIDs) on the Chang' E-1 spacecraft, while orbiting the Moon, occasionally observed two continuous flux peaks with energies not exceeding 8 and 4 times that of the prevailing solar wind proton energy. These form parallel curves (PCs) with an energy ratio of 2 in the energy-time spectrogram. The fluxes of the two curves are comparable, around 10(-5) similar to 10(-4) of the solar wind flux. The pitch angle distribution of PC particles is concentrated around 90 degrees. The velocity space distribution of PC particles shows distinct double-ring feature, suggesting the existence of a pickup ion species with m/q = 2. Pickup ions from local interstellar medium, the inner sources and the lunar exosphere are investigated. We conclude that this observation may be the first in situ evidence for H-2(+) ions in the lunar exosphere, thus providing new insights on the evolution and fate of solar wind hydrogen in the solar system. Citation: Wang, X.-D., et al. (2011), Detection of m/q = 2 pickup ions in the plasma environment of the Moon: The trace of exospheric H-2(+), Geophys. Res. Lett., 38, L14204, doi: 10.1029/2011GL047488.
DOI10.1029/2011GL047488
Indexed BySCI
Language英语
WOS IDWOS:000292835100001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8025
Collection月球与深空探测研究部
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100012, Peoples R China
3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
4.Natl Ctr Space Weather, Beijing 100081, Peoples R China
5.Univ Toulouse, CNRS, IRAP, F-31028 Toulouse 4, France
Recommended Citation
GB/T 7714
Wang, X. -D.,Zong, Q. -G.,Wang, J. -S.,et al. Detection of m/q=2 pickup ions in the plasma environment of the Moon: The trace of exospheric H-2(+)[J]. GEOPHYSICAL RESEARCH LETTERS,2011,38.
APA Wang, X. -D..,Zong, Q. -G..,Wang, J. -S..,Cui, J..,Reme, H..,...&Ouyang, Z. -Y..(2011).Detection of m/q=2 pickup ions in the plasma environment of the Moon: The trace of exospheric H-2(+).GEOPHYSICAL RESEARCH LETTERS,38.
MLA Wang, X. -D.,et al."Detection of m/q=2 pickup ions in the plasma environment of the Moon: The trace of exospheric H-2(+)".GEOPHYSICAL RESEARCH LETTERS 38(2011).
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