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Abstract:

In this paper, line profile analysis of several Cr transitions was carried out for characterization of a laser-induced plasma. The plasma was generated on a metallic alloy (nominal Cr concentration 29.7%) in air at atmospheric pressure by using an infrared Nd:YAG laser. The emission intensities of 24 Cr I lines and 25 Cr II lines were measured spatially integrated along the line-of-sight with good resolution. Their line profiles were analyzed applying a computational fitting algorithm under a framework of a homogeneous plasma in thermodynamic equilibrium. The effects of self-absorption and spatial inhomogeneity were taken into account. The plasma temperature and the parameters Nl (the atom/ion concentration times the length of the plasma along the line-of-sight) were accurately determined, and the electron density was estimated. The results were properly interpreted under the employed approach, demonstrating the important influence of the issues investigated on characterizing the physical state of laser-induced plasmas. © 2013 Elsevier Ltd.

Registro:

Documento: Artículo
Título:Laser-induced plasma characterization using line profile analysis of chromium neutral atom and ion transitions
Autor:Díaz Pace, D.M.
Filiación:Instituto de Física 'Arroyo Seco', Campus Universitario, Fac. de Cs. Exactas, UNICEN, Pinto 399, B7000GHG Tandil, Buenos Aires, Argentina
Palabras clave:Inhomogeneous plasma; LIBS; Plasma characterization; Self-absorption; Atmospheric pressure; Atom lasers; Characterization; Chromium compounds; Neodymium lasers; Plasma theory; Yttrium aluminum garnet; Inhomogeneous plasma; Laser induced plasma; LIBS; Line profile analysis; Plasma characterization; Self absorption; Spatial in-homogeneity; Thermodynamic equilibria; Laser produced plasmas; absorption; atmospheric pressure; chromium; electron density; experimental study; inhomogeneity; laser induced fluorescence; plasma; thermodynamics
Año:2013
Volumen:129
Página de inicio:254
Página de fin:262
DOI: http://dx.doi.org/10.1016/j.jqsrt.2013.06.023
Título revista:Journal of Quantitative Spectroscopy and Radiative Transfer
Título revista abreviado:J. Quant. Spectrosc. Radiat. Transf.
ISSN:00224073
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00224073_v129_n_p254_DiazPace

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Citas:

---------- APA ----------
(2013) . Laser-induced plasma characterization using line profile analysis of chromium neutral atom and ion transitions. Journal of Quantitative Spectroscopy and Radiative Transfer, 129, 254-262.
http://dx.doi.org/10.1016/j.jqsrt.2013.06.023
---------- CHICAGO ----------
Díaz Pace, D.M. "Laser-induced plasma characterization using line profile analysis of chromium neutral atom and ion transitions" . Journal of Quantitative Spectroscopy and Radiative Transfer 129 (2013) : 254-262.
http://dx.doi.org/10.1016/j.jqsrt.2013.06.023
---------- MLA ----------
Díaz Pace, D.M. "Laser-induced plasma characterization using line profile analysis of chromium neutral atom and ion transitions" . Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 129, 2013, pp. 254-262.
http://dx.doi.org/10.1016/j.jqsrt.2013.06.023
---------- VANCOUVER ----------
Díaz Pace, D.M. Laser-induced plasma characterization using line profile analysis of chromium neutral atom and ion transitions. J. Quant. Spectrosc. Radiat. Transf. 2013;129:254-262.
http://dx.doi.org/10.1016/j.jqsrt.2013.06.023