A Simple Device for Lens-to-Sample Distance Adjustment in Laser-Induced Breakdown Spectroscopy (LIBS)

被引：22

作者：

Cortez, Juliana ^{[1
]}

Farias Filho, Benedito B. ^{[1
]}

Fontes, Laiane M. ^{[1
]}

Pasquini, Celio ^{[1
]}

Raimundo, Ivo M., Jr. ^{[1
]}

Pimentel, Maria Fernanda ^{[2
]}

Lins Borba, Flavia de Souza ^{[3
]}

机构：

[1] Univ Estadual Campinas, Dept Analyt Chem, Chem Inst, Campinas, SP, Brazil

[2] Univ Fed Pernambuco, Dept Chem Engn, Recife, PE, Brazil

[3] Univ Fed Pernambuco, Dept Fundamental Chem, Recife, PE, Brazil

来源：

APPLIED SPECTROSCOPY | 2017年 / 71卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

Laser-induced breakdown spectroscopy; LIBS; lens-to-sample distance; sample positioning; repeatability;

D O I：

10.1177/0003702816687571

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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.

引用

页码：634 / 639

页数：6

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