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Type: Artigo
Title: A Simple Device For Lens-to-sample Distance Adjustment In Laser-induced Breakdown Spectroscopy (libs)
Author: Cortez
Juliana; Farias Filho
Benedito B.; Fontes
Laiane M.; Pasquini
Celio; Raimundo
Ivo M.
Jr.; Pimentel
Maria Fernanda; Lins Borba
Flavia de Souza
Abstract: A simple device based on two commercial laser pointers is described to assist in the analysis of samples that present uneven surfaces and/or irregular shapes using laser-induced breakdown spectroscopy (LIBS). The device allows for easy positioning of the sample surface at a reproducible distance from the focusing lens that conveys the laser pulse to generate the micro-plasma in a LIBS system, with reproducibility better than +/- 0.2 mm. In this way, fluctuations in the fluence (J cm(-2)) are minimized and the LIBS analytical signals can be obtained with a better precision even when samples with irregular surfaces are probed.
Subject: Laser-induced Breakdown Spectroscopy
Lens-to-sample Distance
Sample Positioning
Editor: Sage Publications Inc
Thousand Oaks
Citation: Applied Spectroscopy. Sage Publications Inc, v. 71, p. 634 - 639, 2017.
Rights: fechado
Identifier DOI: 10.1177/0003702816687571
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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