Evaluation of self-absorption coefficients of aluminum emission lines in laser-induced breakdown spectroscopy measurements

Year: 2005

Authors: El Sherbini A.M., El Sherbini T.M., Hegazy H., Cristoforetti G., Legnaioli S., Palleschi V., Pardini L., Salvetti A., Tognoni E.

Autors Affiliation: CNR, Appl Laser Spect Lab, Inst Chem Phys Proc Res Area, I-56124 Pisa, Italy;
Cairo Univ, Fac Sci, Dept Phys, Lab Lasers & New Mat, Cairo, Egypt;
Atom Energy Author, Nucl Res Ctr, Dept Plasma Phys, Enchass 13759, Egypt

Abstract: In quantitative Laser Induced Breakdown Spectroscopy (LIBS) measurements it is essential to account for the effect of self-absorption on the emission lines intensity. In order to quantify this effect, in this paper we propose a simple method for evaluating the ratio between the actual measured line intensity and the intensity expected in absence of self-absorption and, if necessary, correcting the effect of self-absorption on line intensity. The method, based on a homogeneous plasma model, is applicable when the plasma electron density is known and in particular to lines whose Stark broadening parameter is available. (c) 2005 Elsevier B.V All rights reserved.


Volume: 60 (12)      Pages from: 1573  to: 1579

KeyWords: LIBS; spectroscopy; double pulse; self-absorption; stark broadening
DOI: 10.1016/j.sab.2005.10.011

Citations: 257
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