Analysis of geological samples by laser-induced breakdown spectroscopy at low atmospheric pressures

Details Analysis of geological samples by laser-induced breakdown spectroscopy at low atmospheric pressures Analysis of geological samples by laser-induced breakdown spectroscopy at low atmospheric pressures

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..809p&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.809

Physics

Scientific paper

Several future space missions to planets, moons and asteroids in the solar system consider landers equipped with a laser-induced breakdown spectroscopy (LIBS) instrument. This technique provides an in-situ elemental analysis of all major and many trace elements on surfaces of the solar system bodies by identification of particular atomic transitions in emission spectra of laser-induced plasmas. Excitation and evolution of the plasma depends strongly on the environmental pressure [1]. Therefore, the capability of LIBS is studied for each individual space mission. We focus on LIBS at ultra-high vacuum for exploration of solar system bodies with thin atmospheres and demonstrate its usefulness at a pressure >1 mPa and with a laser excitation energy >1 mJ.

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