Abstract

Microscopic laser-induced breakdown spectroscopy (micro-LIBS) is a promising measurement technique for determining the relative elemental abundances of microscopic spots. Currently, the predominant source of measurement accuracy errors for micro-LIBS is shown to be based on a constant plasma temperature assumption. To reduce these measurement errors particularly in low-pressure applications (i.e., extraterrestrial environments), a mathematical data analysis algorithm is presented that utilizes the many linear independent emission lines per element to estimate the time-integrated state of the plasma in the form of a plasma state matrix coupled with a vector of relative elemental abundances in the observed emission.

© 2007 Optical Society of America

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