Laser induced breakdown spectroscopy on meteorites

Details Laser induced breakdown spectroscopy on meteorites Laser induced breakdown spectroscopy on meteorites

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007acspe..62.1606d&link_type=abstract

Spectrochimica Acta Part B: Atomic Spectroscopy, Volume 62, Issue 12, p. 1606-1611.

Mathematics

Logic

6

Scientific paper

The classification of meteorites when geological analysis is unfeasible is generally made by the spectral line emission ratio of some characteristic elements. Indeed when a meteorite impacts Earth's atmosphere, hot plasma is generated, as a consequence of the braking effect of air, with the consequent ablation of the falling body. Usually, by the plasma emission spectrum, the meteorite composition is determined, assuming the Boltzmann equilibrium. The plasma generated during Laser Induced Breakdown Spectroscopy (LIBS) experiment shows similar characteristics and allows one to verify the mentioned method with higher accuracy. On the other hand the study of Laser Induced Breakdown Spectroscopy on meteorite can be useful for both improving meteorite classification methods and developing on-flight techniques for asteroid investigation. In this paper certified meteorites belonging to different typologies have been investigated by LIBS: Dofhar 461 (lunar meteorite), Chondrite L6 (stony meteorite), Dofhar 019 (Mars meteorite) and Sikhote Alin (irony meteorite).

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