Evaluation of a compact spectrograph for in-situ and stand-off Laser-Induced Breakdown Spectroscopy analyses of geological samples on Mars missions
Evaluation of a compact spectrograph for in-situ and stand-off Laser-Induced Breakdown Spectroscopy analyses of geological samples on Mars missions
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DOI：
10.1016/j.sab.2005.05.007
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发表时间：
2005-07
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通讯作者：
B. Sallé;D. Cremers;S. Maurice;R. Wiens;P. Fichet
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作者：
B. Sallé;D. Cremers;S. Maurice;R. Wiens;P. Fichet
激光诱导击穿光谱（LIBS）正在积极开发中，用于未来火星表面探测器。该分析方法可以被部署用于原位和/或远离分析，与用于行星表面分析的先前和当前元素分析方法相比，后一实施例提供了最大的优点。对于这种应用，LIBS必须在分析能力方面进行彻底的研究，并且必须开发飞行级仪器。由于火星上主要是CO2大气的低压，需要进行研究以了解分析要求并确定这些条件下的性能。间隔分析对仪器有最严格的要求。因此，必须确定通常用于典型LIBS实验室设置中的高性能组件（通常不针对小尺寸和重量进行优化）是否是从使命中获得最大科学回报所必需的。LIBS装置的关键部件是由光谱仪和探测器组成的探测系统。在这里，我们提出了一个紧凑的光谱仪（海洋光学HR 2000）的设计，在火星大气条件下的地质样品的原位和远距离LIBS分析的评估。
Laser-induced Breakdown Spectroscopy (LIBS) is actively under development for future use on surface probes to Mars. The analytical method can be deployed for in-situ and/or stand-off analysis with the latter embodiment providing the greatest advantages compared to previous and current elemental analysis methods used for planetary surface analysis. For this application, LIBS must be thoroughly investigated in terms of analytical capabilities and flight-rated instruments must be developed. Because of the low pressure of the predominantly CO2atmosphere on Mars, studies are needed to understand analytical requirements and to determine performance under these conditions. Stand-off analysis demands the most stringent requirements on instrumentation. Therefore, it must be determined if the high performance components that are normally used in a typical LIBS laboratory setup, which are generally not optimized for small size and weight, are essential to obtain the maximum scientific return from a mission. A key component of a LIBS apparatus is the detection system consisting of a spectrograph and a detector. Here we present an evaluation of one design of a compact spectrograph (Ocean Optics HR2000) for in-situ and stand-off LIBS analyses of geological samples under Mars atmospheric conditions.