Flame-enhanced laser-induced breakdown spectroscopy

被引：59
作者：
Liu, L. [1 ]
Li, S. [2 ]
He, X. N. [1 ]
Huang, X. [1 ]
Zhang, C. F. [1 ]
Fan, L. S. [1 ]
Wang, M. X. [1 ]
Zhou, Y. S. [1 ]
Chen, K. [2 ]
Jiang, L. [3 ]
Silvain, J. F. [1 ,4 ]
Lu, Y. F. [1 ]
机构：
[1] Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA
[2] Univ Pittsburgh, Dept Elect & Comp Engn, Pittsburgh, PA 15260 USA
[3] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China
[4] Inst Chim Mat Condensee Bordeaux ICMCB CNRS 87, F-33608 Pessac, France
来源：
OPTICS EXPRESS | 2014年 / 22卷 / 07期
基金：
美国国家科学基金会;
关键词：
SAMPLE TEMPERATURE; OPTICAL-EMISSION; PULSE; PLASMA; ABLATION; TARGET;
D O I：
10.1364/OE.22.007686
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Flame-enhanced laser-induced breakdown spectroscopy (LIBS) was investigated to improve the sensitivity of LIBS. It was realized by generating laser-induced plasmas in the blue outer envelope of a neutral oxy-acetylene flame. Fast imaging and temporally resolved spectroscopy of the plasmas were carried out. Enhanced intensity of up to 4 times and narrowed full width at half maximum (FWHM) down to 60% for emission lines were observed. Electron temperatures and densities were calculated to investigate the flame effects on plasma evolution. These calculated electron temperatures and densities showed that high-temperature and low-density plasmas were achieved before 4 mu s in the flame environment, which has the potential to improve LIBS sensitivity and spectral resolution. (C) 2014 Optical Society of America
引用
收藏
页码：7686 / 7693
页数：8
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