Flame-enhanced laser-induced breakdown spectroscopy

Authors

L. Liu, University of Nebraska-Lincoln
S. Li, University of Pittsburgh
X. N. He, University of Nebraska-Lincoln
X. Huang, University of Nebraska-Lincoln
C. F. Zhang, University of Nebraska-Lincoln
L. S. Fan, University of Nebraska-LincolnFollow
M. X. Wang, University of Nebraska-Lincoln
Y. S. Zhou, University of Nebraska-LincolnFollow
K. Chen, University of Pittsburgh
L. Jiang, Engineering, Beijing Institute of Technology,
J. F. Silvain, University of Nebraska-Lincoln, Institut de Chimie de la Matière Condensée de Bordeaux
Yongfeng Lu, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

4-7-2014

Citation

Optics Express 22:7 (2014), pp. 7686 - 7693; doi: 10.1364/OE.22.007686

Comments

Copyright © 2014 Optical Society of America. Used by permission.

Abstract

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 μs in the flame environment, which has the potential to improve LIBS sensitivity and spectral resolution.