| dc.creator | Bredice, Fausto Osvaldo | |
| dc.creator | Borges, F. O. | |
| dc.creator | Sobral, Hugo Martín | |
| dc.creator | Villagrán, Mayo | |
| dc.creator | Di Rocco, Héctor O. | |
| dc.creator | Cristoforetti, G. | |
| dc.creator | Legnaioli, S. | |
| dc.creator | Palleschi, V. | |
| dc.creator | Pardini, L. | |
| dc.creator | Salvetti, A. | |
| dc.creator | Tognoni, E. | |
| dc.date | 2006-10 | |
| dc.date | 2016-10-13T13:55:29Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/55773 | |
| dc.identifier | http://digital.cic.gba.gob.ar/handle/11746/372 | |
| dc.identifier | issn:0584-8547 | |
| dc.description | This paper is part o f a more general study aimed to the determination o f the best experimental procedures for reliable quantitative measurements o f F e-M n alloys by LIBS. In this work, attention is pointed on the self-absorption processes, whose effect deeply influences the LIBS measurements, reflecting in non-linear calibration curves. The effect o f self-absorption on the line intensity can be quantified by defining a self absorption coefficient, that measures the deviation o f the line intensity from the linear extrapolation o f the curve o f growth in the optically thin regime. The authors demonstrated in a previous paper that self absorption coefficients could be calculated once the electron density o f the plasma is known and the Stark coefficients o f the lines are available. However, when the Stark coefficients o f the lines o f interest are not known, a different approach is needed. In this work a new method for evaluation o f self absorption coefficients in LIBS measurements is presented, which does not require the knowledge o f Stark coefficients. In order to understand the basic principles and setting out the theoretical tools that w ill be used for the analysis o f the alloys, a preliminary study was done on pure Mn; LIBS spectra were acquired in different experimental conditions, at different laser energies and different delays after the laser irradiation o f the sample. Moreover, collinear double pulse measurements were also performed. Analytical relations were derived and experimental procedures devised for evaluation o f the self absorption coefficients o f several Mn lines, which are important for characterization and control o f the experimental conditions in which the analysis is performed. | |
| dc.description | Facultad de Ingeniería | |
| dc.format | application/pdf | |
| dc.format | 1295-1303 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
| dc.subject | Ingeniería | |
| dc.subject | laser-induced breakdown spectroscopy | |
| dc.subject | espectroscopia de plasma inducido por láser | |
| dc.subject | Aleaciones | |
| dc.subject | fe-mn alloys | |
| dc.subject | self-absorption | |
| dc.title | Evaluation of self-absorption of manganese emission lines in laser induced breakdown spectroscopy measurements | |
| dc.type | Articulo | |
| dc.type | Articulo | |
