Physics
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ntlr.work...34k&link_type=abstract
In Lunar and Planetary Inst., Joint Workshop on New Technologies for Lunar Resource Assessment p 34-35 (SEE N93-17233 05-91)
Physics
Laser Spectroscopy, Lunar Resources, Lunar Surface, Microplasmas, Spectral Resolution, Chemical Analysis, Chemical Elements, Emission Spectra, Lunar Environment, Real Time Operation
Scientific paper
An in situ analytical technique that can remotely determine the elemental constituents of solids has been demonstrated. Laser-Induced Breakdown Spectroscopy (LIBS) is a form of atomic emission spectroscopy in which a powerful laser pulse is focused on a solid to generate a laser spark, or microplasma. Material in the plasma is vaporized, and the resulting atoms are excited to emit light. The light is spectrally resolved to identify the emitting species. LIBS is a simple technique that can be automated for inclusion aboard a remotely operated vehicle. Since only optical access to a sample is required, areas inaccessible to a rover can be analyzed remotely. A single laser spark both vaporizes and excites the sample so that near real-time analysis (a few minutes) is possible. This technique provides simultaneous multielement detection and has good sensitivity for many elements. LIBS also eliminates the need for sample retrieval and preparation preventing possible sample contamination. These qualities make the LIBS technique uniquely suited for use in the lunar environment.
Cremers David A.
Kane K. Y.
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