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Radiometric Calibration of the SwRI Ultraviolet Reflectance Chamber (SwURC) Far-Ultraviolet Reflectometer

机译:SwRI紫外反射室(SwURC)远紫外反射仪的辐射定标

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The Southwest Research Institute Ultraviolet Reflectance Chamber (SwURC) is a highly capable UV reflectometer chamber and data acquisition system designed to provide bidirectional scattering data of various surfaces and materials. The chamber provides laboratory-based UV reflectance measurements of water frost/ice, lunar soils, simulants, and analogs to support interpretation of UV reflectance data from the Lyman Alpha Mapping Project (LAMP) Lunar Reconnaissance Orbiter (LRO). A deuterium lamp illuminates a monochromator with a nominal wavelength range of 115 nm to 210 nm. The detector scans emission angles -85° to +85° in the principal plane. Liquid nitrogen passed through the sample mount enables constant refrigeration of tray temperatures down to 78 K to form water ice and other volatile samples. The SwURC can be configured to examine a wide range of samples and materials through the use of custom removable sample trays, connectors, and holders. Calibration reference standard measurements reported here include Al/MgF_2 coated mirrors for specular reflection and Fluorilon for diffuse reflectances. This calibration work is a precursor to reports of experiments measuring the far-UV reflectance of water frost, lunar simulants, and Apollo soil sample 10084 in support of LRO-LAMP.
机译:西南研究所紫外线反射腔(SwURC)是一种功能强大的紫外线反射计腔和数据采集系统,旨在提供各种表面和材料的双向散射数据。该室提供了基于实验室的水霜/冰,月球土壤,模拟物和类似物的紫外线反射率测量结果,以支持对莱曼阿尔法测绘项目(LAMP)月球勘测轨道器(LRO)的紫外线反射率数据的解释。氘灯照亮标称波长范围为115 nm至210 nm的单色仪。检测器在主平面内扫描-85°至+ 85°的发射角。通过样品架的液氮可将托盘温度恒定制冷至78 K,从而形成水冰和其他挥发性样品。 SwURC可以配置为通过使用定制的可移动样品盘,连接器和固定器来检查各种样品和材料。此处报告的校准参考标准测量包括用于镜面反射的Al / MgF_2涂层反射镜和用于漫反射率的Fluorilon。这项校准工作是为测量支持LRO-LAMP的水霜,月球模拟物和阿波罗土壤样品10084的远紫外线反射率的实验报告的前身。

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