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

Anno: 2019

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

Affiliazione autori: Laser and Plasma Research Institute, Shahid Beheshti University, G. C. Evin, Tehran, Iran
National Institute of Optics of the National Research Council (INO-CNR), Via G. Moruzzi 1, Pisa, Italy
Institute of Chemistry of Organometallic Compounds, 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.

Giornale/Rivista: ANALYTICAL CHEMISTRY

Volume: 91 (13)      Da Pagina: 8595  A: 8601

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

Citazioni: 14
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2022-05-22
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