DOI: 10.1002/2016GL068393
论文题名: LADEE/LDEX observations of lunar pickup ion distribution and variability
作者: Poppe A.R. ; Halekas J.S. ; Szalay J.R. ; Horányi M. ; Levin Z. ; Kempf S.
刊名: Geophysical Research Letters
ISSN: 0094-9137
EISSN: 1944-8868
出版年: 2016
卷: 43, 期: 7 起始页码: 3069
结束页码: 3077
语种: 英语
英文关键词: LADEE
; lunar exosphere
; pickup ions
Scopus关键词: Dust
; Ionosphere
; Moon
; Pickups
; Solar wind
; Dominant contributions
; Empirical calibration
; Ion distributions
; LADEE
; Linear correlation
; Lunar atmospheres
; Lunar exospheres
; Pick-up ions
; Ions
英文摘要: We report fortuitous observations of low-energy lunar pickup ion fluxes near the Moon while in the solar wind by the Lunar Dust Experiment (LDEX) on board the Lunar Atmosphere and Dust Environment Explorer (LADEE). We describe the method of observation and the empirical calibration of the instrument for ion observations. LDEX observes several trends in the exospheric ion production rate, including a scale height of approximately 100 km, a positive, linear correlation with solar wind flux, and evidence of a slight enhancement near 7-8 h local time. We compare the LDEX observations to both LADEE Neutral Mass Spectrometer ion mode observations and theoretical models. The LDEX data are best fit by total exospheric ion production rates of ≈6 × 103 m-3 s-1 with dominant contributions from Al+, CO+, and Ar+, although the LDEX data suggest that the aluminum neutral density and corresponding ion production rate are lower than predicted by recent models. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979487392&doi=10.1002%2f2016GL068393&partnerID=40&md5=02a747e1d8c1ba316a98badf8b389faa
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10100
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Space Sciences Laboratory, University of California, Berkeley, CA, United States
Recommended Citation:
Poppe A.R.,Halekas J.S.,Szalay J.R.,et al. LADEE/LDEX observations of lunar pickup ion distribution and variability[J]. Geophysical Research Letters,2016-01-01,43(7).