DOI: 10.1002/2015GL064120
论文题名: Variability of helium, neon, and argon in the lunar exosphere as observed by the LADEE NMS instrument
作者: Benna M. ; Mahaffy P.R. ; Halekas J.S. ; Elphic R.C. ; Delory G.T.
刊名: Geophysical Research Letters
ISSN: 0094-9204
EISSN: 1944-8935
出版年: 2015
卷: 42, 期: 10 起始页码: 3723
结束页码: 3729
语种: 英语
英文关键词: argon
; exosphere
; helium
; Moon
; neon
; variability
Scopus关键词: Argon
; Helium
; Inert gases
; Ionosphere
; Moon
; Dust environment
; Exosphere
; Global measurements
; Lunar atmospheres
; Lunar exospheres
; Non-condensable gas
; Temporal variation
; Variability
; Neon
; argon
; helium
; Moon
; neon
; planetary atmosphere
; solar wind
; spatial distribution
; temporal variation
英文摘要: The Neutral Mass Spectrometer (NMS) onboard the Lunar Atmosphere and Dust Environment Explorer (LADEE) provided the first global characterization of He and Ar along with the discovery of Ne in the lunar exosphere. The mapping of the equatorial distribution of these noble gases revealed new selenographic and temporal variations. Helium was found to be controlled by the supply of solar wind alpha particles and by the presence of an endogenous source that supplies the exosphere at a rate of 1.9 × 1023 atoms s-1. Neon was detected over the nightside at levels comparable to He and was found to exhibit the spatial distribution of a surface accommodated noncondensable gas. The global measurements of NMS revealed the presence of a localized Ar enhancement that has never been identified before at the western maria. The variability resulting from this local enhancement is coupled to a more global but transient source. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931576658&doi=10.1002%2f2015GL064120&partnerID=40&md5=57431bc0edf320e795f393352c4534bf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8820
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: NASA Goddard Space Flight Center, Greenbelt, MD, United States
Recommended Citation:
Benna M.,Mahaffy P.R.,Halekas J.S.,et al. Variability of helium, neon, and argon in the lunar exosphere as observed by the LADEE NMS instrument[J]. Geophysical Research Letters,2015-01-01,42(10).