Determination of iron metal optical constants: Implications for ultraviolet, visible, and near‐infrared remote sensing of airless bodies
Determination of iron metal optical constants: Implications for ultraviolet, visible, and near‐infrared remote sensing of airless bodies
复制标题
铁金属光学常数的测定：对无空气物体的紫外线、可见光和近红外遥感的影响
DOI：
10.1029/2012gl051630
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发表时间：
2012
影响因子：
5.2
通讯作者：
E. Coman
中科院分区：
文献类型：
--
作者：
J. Cahill;D. Blewett;N. V. Nguyen;Kun Xu;O. Kirillov;S. Lawrence;B. Denevi;E. Coman
金属铁是行星材料中常见的不透明相，既是一种火成岩矿物，也是一种空间风化的副产品。无论以哪种形式，金属铁对从地面或空间天文台获得的行星表面的紫外线、可见光和近红外光谱的解释都有很大的影响。因此，铁的光学性质是从反射光谱反演成熟度和矿物比例的精确理论辐射转移混合模型所必需的关键输入。在这里，我们报道了在电磁光谱的紫外线、可见光和近红外部分(∼160到1700 nm)中铁的光学常数的新测量。这些值是通过气相沉积在熔融硅棱镜上的铁金属薄膜来确定的。光学常数的测定是使用椭偏仪进行的，该椭偏仪在棱镜内进行测量，感测未暴露在环境大气中的金属薄膜的侧面。我们报告的数据对模拟行星光谱和比较地外样本的实验室测量与遥感数据集具有重要意义。
Iron metal is an opaque phase common in planetary materials both as an igneous mineral and as a space‐weathering by‐product. In either form, iron metal has a large influence on the interpretation of ultraviolet, visible, and near‐infrared spectra of planetary surfaces obtained from Earth‐ or space‐based observatories. Therefore, the optical properties of iron are a critical input necessary for accurate theoretical radiative‐transfer mixing models for inversion of maturity and mineral proportions from reflectance spectra. Here we report new measurements of the optical constants of iron in the ultraviolet, visible, and near‐infrared portions of the electromagnetic spectrum (∼160 to 1700 nm). These values are determined from an iron metal film vapor‐deposited onto a fused silica prism. Optical constant determination is carried out using an ellipsometer that performs the measurement within the prism, sensing the side of the metal film unexposed to the ambient atmosphere. The data we report have important implications for modeling planetary spectra and for comparison of laboratory measurements of extraterrestrial samples with remotely sensed data sets.
影响因子：
56.9
作者：
T. Noguchi;Tomoki Nakamura;M. Kimura;M. Zolensky;Masahiko Tanaka;T. Hashimoto;M. Konno;A. Nakato-A.
通讯作者：
T. Noguchi;Tomoki Nakamura;M. Kimura;M. Zolensky;Masahiko Tanaka;T. Hashimoto;M. Konno;A. Nakato-A.