Lunar atmospheric H2 detections by the LAMP UV spectrograph on the Lunar Reconnaissance Orbiter

Lunar atmospheric H2 detections by the LAMP UV spectrograph on the Lunar Reconnaissance Orbiter
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月球勘测轨道器上的 LAMP 紫外光谱仪检测月球大气 H2

DOI:
10.1016/j.icarus.2013.07.011
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发表时间:
2013
期刊:
影响因子:
3.2
通讯作者:
K. Retherford
K. Retherford
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
S. Stern;Jason C. Cook;J. Chaufray;Paul D. Feldman;G. R. Gladstone;K. Retherford

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我们报告的检测H2看到在我们的分析黄昏观测的月球大气层的LAMP仪器登上美国宇航局的月球勘测轨道飞行器。利用2009年9月至2013年3月期间在月球大气中收集的大量数据,我们首次在月球大气中发现并确定了H2的存在。在120 K时,我们得到了H2的面密度为1.2 ± 0.4 × 103cm− 3。这比最初预测的小10倍,比阿波罗时代数据的上限小几倍。
We report on the detection of H2as seen in our analysis of twilight observations of the lunar atmosphere observed by the LAMP instrument aboard NASA’s Lunar Reconnaissance Orbiter. Using a large amount of data collected on the lunar atmosphere between September 2009 and March 2013, we have detected and identified, the presence of H2in the native lunar atmosphere, for the first time. We derive a surface density for H2of 1.2 ± 0.4 × 103cm−3at 120 K. This is about 10 times smaller than originally predicted, and several times smaller than previous upper limits from the Apollo era data.