Successes and Challenges of Laser-Induced Breakdown Spectroscopy (LIBS) Applied to Chemical Analyses of Geological Samples
نویسندگان
چکیده
The laser-induced breakdown spectrometer (LIBS) on the ChemCam instrument [1] on the Curiosity rover on Mars has played a vital role in bringing this new technology to the attention of the scientific community. With over 100,000 spectra from individual laser shots collected to date and many more in progress, ChemCam has amply demonstrated the robustness of this technique for remote applications in difficult environments. However, the ±10-20% accuracy for major and minor elements analyzed by the ChemCam LIBS [2] currently limits its usefulness to semi-quantitative analyses; comparable issues also limit other geological applications of LIBS in scenarios with geologically diverse samples. This paper discusses successes and challenges being addressed in improving LIBS accuracies and bringing this technique to its full potential in applications across the geological community.
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