Exploiting Self-Absorption for Plasma Characterization in Laser-Induced Breakdown Spectroscopy Experiments:
A Comparison of Two Recent Approaches

Year: 2019

Authors: Safi A., Tavassoli H.S., Cristoforetti G., Tognoni E., Campanella B., Legnaioli S., Pagnotta S., Poggialini F., Palleschi V.

Autors Affiliation: Shahid Beheshti Univ, Laser & Plasma Res Inst, GC Evin, Tehran, Iran; CNR, INO, Natl Res Council, Natl Inst Opt, Via G Moruzzi 1, Pisa, Italy; Inst Chem Organometall Cpds, Appl & Laser Spect Lab, Via G Moruzzi 1, Pisa, Italy.

Abstract: In this article, we compare two analytical methods that have been recently proposed: the columnar density
Saha−Boltzmann plot method of Cristoforetti and Tognoni (Cristoforetti, G.; Tognoni, E. Spectrochim. Acta, Part B, 2013, 79−
80, 63−71) and the C-sigma model of Aragon and Aguilera (Aragon, C.; Aguilera, J. A. J. Quant. Spectrosc. Radiat. Trans. 2014,
149, 90−102). Both methods are based on the exploitation of self-absorbed lines for the characterization of plasmas in laserinduced
breakdown spectroscopy experiments. However, although the two methods can be safely applied in many cases, their
usefulness is limited in many practical cases of interest because of the intrinsic constraints of the used plasma model or because
of the complexity of the numerical treatment. The two methods are presented here and critically discussed. Finally, an extended
C-sigma approach is proposed to merge the advantages of the two methods, overcoming their intrinsic limitations and
simplifying the numerical treatment.

Journal/Review: ANALYTICAL CHEMISTRY

Volume: 91 (13)      Pages from: 8595  to: 8601

KeyWords: Laser-induced plasma; self-absorption; plasma diagnostics
DOI: 10.1021/acs.analchem.9b01885

Citations: 26
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-11-17
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here