Development of a micro-ice production apparatus and NIR spectral measurements of frosted minerals for future lunar ice exploration missions

Development of a micro-ice production apparatus and NIR spectral measurements of frosted minerals for future lunar ice exploration missions
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为未来月球冰探索任务开发微冰生产设备和磨砂矿物的近红外光谱测量

DOI:
10.1016/j.icarus.2020.114273
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发表时间:
2021
期刊:
影响因子:
3.2
通讯作者:
Kazuto Saiki
Kazuto Saiki
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Aoi Ogishima;Kazuto Saiki

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关于太阳系中水的存在的知识提供了关于太阳系和生命形式的形成和演化的关键信息。近年来,多项遥感观测表明,在一些太阳系内部天体的永久阴影区域存在水冰;然而,水冰的确切数量非常不确定。为了测试未来月球极地探测任务中冰探测设备的性能,我们建造了一台在月球表层模拟矿物上产生微量水冰(0.1-2wt%)的设备,并测量了它们的近红外光谱。用反射光谱中1.5Kμm处的吸收定量了吸水强度与水分含量之间的关系。结果表明,矿物颗粒上附着的水冰的可探测性与矿物的种类有关。比较了实验室反射光谱和Hapke模型光谱,观测到的光谱特征相似性表明,当冰以球形颗粒形式混合时,Hapke模型可以有效地使用。
Knowledge of the occurrence of water in the solar system provides key information concerning the formation and evolution of the solar system and lifeforms. In recent years, multiple remote-sensing observations have suggested the existence of water ice in permanently shadowed regions on some inner solar system bodies; however, the exact amount of water ice is highly uncertain. To test the performance of ice detection equipment for future lunar polar exploration missions, we constructed an apparatus to produce minute amounts of water ice (0.1–2 wt%) on lunar regolith analog minerals and measured their near-infrared spectra. The relationship between the strength of water absorption and the water content was quantified using the absorption at 1.5 μm in the reflectance spectra. The results show that the detectability of water ice attached to mineral grains depends on the mineral species. Laboratory reflectance spectra were compared to Hapke model spectra, and the observed spectral feature similarities indicate that the Hapke model can be effectively used when the ice is mixed in the form of spherical grains.
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