Fast analysis of complex metallic alloys by double-pulse time-integrated laser-induced breakdown spectroscopy

Year: 2009

Authors: Sorrentino F., Carelli G., Francesconi F., Francesconi M., Marsili P., Cristoforetti G., Legnaioli S., Palleschi V., Tognoni E.

Autors Affiliation: Marwan Technology s.r.l., Spin-off University of Pisa Largo Pontecorvo 3, 56127 Pisa, Italy; Applied Laser Spectroscopy Laboratory, IPCF/CNR – Via G.Moruzzi 1, 56124 Pisa, Italy

Abstract: Results are reported on the application of double-pulse Laser-induced Breakdown Spectroscopy (LIBS) for fast analysis of complex metallic alloys. The approach followed for the determination of the composition of the alloys is based on the time-integrated acquisition of LIBS spectra emitted by plasmas induced by collinear double-pulse laser excitation. The spectra are analysed using the Partial Least Squares method, which allows the determination of sample composition even in the presence of strong spectral interferences. The results shown indicate the possibility of measuring the composition of complex metallic alloys in very short times and using relatively cheap LIBS instrumentation. (C) 2009 Elsevier B.V. All rights reserved.


Volume: 64 (10)      Pages from: 1068  to: 1072

KeyWords: LIBS; Partial Least Squares method; Steel analysis
DOI: 10.1016/j.sab.2009.07.037

Citations: 32
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