globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2021.117107
论文题名:
Thermal evolution of water and hydrogen from Apollo lunar regolith grains
作者: Jones B.M.; Aleksandrov A.; Hibbitts C.A.; Orlando T.M.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 571
语种: 英语
中文关键词: activation energies ; hydrogen ; lunar regolith ; recombinative desorption ; volatiles ; water
英文关键词: Cosmology ; Desorption ; Hydrogen production ; Lunar surface analysis ; Probability distributions ; Water ; Energy ; Lunar regolith ; Lunar samples ; Molecular hydrogen ; Recombinative desorption ; Temperature programme ; Thermal evolution ; Ultra-high ; Vacuum interfaces ; Volatile ; Activation energy ; Parnassius apollo
英文摘要: The evolution of water and molecular hydrogen from Apollo lunar sample 15221, a mature mare soil, was examined by temperature program desorption (TPD) experiments conducted under ultra-high vacuum conditions. Desorption at the grain/vacuum interface with re-adsorption as water transports though the void space of the grains and activated sub-surface diffusion were found to reproduce the experimental TPD signal. Signal from the grain/vacuum interface yielded the second order desorption activation energies and site probability distributions. Water from sample 15221 exhibited a broad distribution of activation energies peaking at 130 kJ mol−1 extending up to 350 kJ mol−1 at zero coverage limit with an onset of 110 kJ mol−1 at full coverage. Our results suggest that water and hydrogen originating from lunar regolith contributes a minor amount to the observed mass in the LCROSS impact event. The abnormal amount of molecular hydrogen observed in the ejecta plume of the LCROSS impact may indicate that the radiolytic production of H2 from electron and galatic cosmic rays of physisorbed water is a contributor to the vast quantity of molecular hydrogen detected. © 2021 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165533
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, United States; Center for Space Technology and Research, Georgia Institute of Technology, Atlanta, GA, United States; John Hopkins, Applied Physics Laboratory, Laurel, MD, United States; School of Physics, Georgia Institute of Technology, Atlanta, GA, United States

Recommended Citation:
Jones B.M.,Aleksandrov A.,Hibbitts C.A.,et al. Thermal evolution of water and hydrogen from Apollo lunar regolith grains[J]. Earth and Planetary Science Letters,2021-01-01,571
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Jones B.M.]'s Articles
[Aleksandrov A.]'s Articles
[Hibbitts C.A.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Jones B.M.]'s Articles
[Aleksandrov A.]'s Articles
[Hibbitts C.A.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Jones B.M.]‘s Articles
[Aleksandrov A.]‘s Articles
[Hibbitts C.A.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.