A planetary environment and analysis chamber (PEACh) for coordinated Raman-LIBS-IR measurements under planetary surface environmental conditions
A planetary environment and analysis chamber (PEACh) for coordinated Raman-LIBS-IR measurements under planetary surface environmental conditions
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DOI：
10.1002/jrs.3017
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发表时间：
2012-02-01
影响因子：
2.5
通讯作者：
Wang, Alian
中科院分区：
文献类型：
--
作者：
Sobron, Pablo;Wang, Alian
位于圣路易斯的华盛顿大学开发了一个行星环境和分析室（PEACh），以便在相关的行星环境条件下对地质样品进行现场多光谱测量，并支持未来的行星任务，特别是对火星的兴趣。腔内的压力范围从环境到3 × 10（-2）毫巴。模拟的大气成分和压力是通过针阀和球阀的组合来调节的，这些阀与充满预混气体的容器相连接。样品的温度可以控制在环境温度到- 100摄氏度的范围内。实施的（和将要实施的）原位分析技术有激光拉曼光谱、激光诱导击穿光谱（LIBS）、近红外反射光谱、中红外衰减全反射光谱和显微成像。在良好控制的大气条件下，PEACh对同一地质样品进行协调光谱传感，建立了一种将实验室实验结果与着陆和轨道行星探测任务获得的光谱数据联系起来的方法，这将有助于了解矿物相发生的地表过程及其与大气变化的关系。版权所有：John Wiley & Sons， Ltd。
A planetary environment and analysis chamber (PEACh) has been developed at Washington University in St. Louis, in order to perform in situ multiple spectroscopic measurements on geological samples under relevant planetary environmental conditions and to support future planetary missions, with particular interest on Mars. The pressure in the chamber can range from ambient to 3 x 10(-2) mbar. The simulated atmospheric composition and pressure are regulated via a combination of needle and ball valves connecting the chamber with containers filled with premixed gas. The temperature of the samples can be controlled in a range from ambient to - 100 degrees C. The in situ analytical techniques implemented (and to be implemented) are laser Raman spectroscopy, laser-induced breakdown spectroscopy (LIBS), near-IR reflectance spectroscopy, mid-IR attenuated total reflectance spectroscopy, and microscopic imaging. The coordinated spectroscopic sensing on the same geological sample under well-controlled atmospheric conditions in the PEACh establishes a way to link the results from the laboratory experiments to the spectral data obtained by landed and orbital planetary exploration missions, which will facilitate understanding the surface processes by which mineral phases occur and their association with atmospheric changes. Copyright (C) 2011 John Wiley & Sons, Ltd.