Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7674123 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2016 | 10 Pages |
Abstract
The present work studies the possibility of using pulsed Transversely Excited Atmospheric (TEA) carbon dioxide laser as an energy source for laser-induced breakdown spectroscopy (LIBS) analysis of rocks under simulated Martian atmospheric conditions. Irradiation of a basaltic rock sample with the laser intensity of 56 MW cmâ 2, in carbon-dioxide gas at a pressure of 9 mbar, created target plasma with favorable conditions for excitation of all elements usually found in geological samples. Detection limits of minor constituents (Ba, Cr, Cu, Mn, Ni, Sr, V, and Zr) were in the 3 ppm-30 ppm range depending on the element. The precision varied between 5% and 25% for concentration levels of 1% to 10 ppm, respectively. Generally, the proposed relatively simple TEA CO2 laser-LIBS system provides good sensitivity for geological studies under reduced CO2 pressure.
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Authors
Jelena Savovic, Milovan Stoiljkovic, Miroslav Kuzmanovic, Milos Momcilovic, Jovan Ciganovic, Dragan Rankovic, Sanja Zivkovic, Milan Trtica,