Artículos de revistas
A Simple Device For Lens-to-sample Distance Adjustment In Laser-induced Breakdown Spectroscopy (libs)
Registro en:
Applied Spectroscopy. Sage Publications Inc, v. 71, p. 634 - 639, 2017.
0003-7028
1943-3530
WOS:000399927700007
10.1177/0003702816687571
Autor
Cortez
Juliana; Farias Filho
Benedito B.; Fontes
Laiane M.; Pasquini
Celio; Raimundo
Ivo M.
Jr.; Pimentel
Maria Fernanda; Lins Borba
Flavia de Souza
Institución
Resumen
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 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. 71 4 634 639 National Institute for Advanced Analytical Science and Technology (INCTAA) [FAPESP 2008/57808-1, CNPq 573894/2008-6] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)