Spatially Resolved Elemental Analysis of in a Hydrogen-Air Diffusion Flame by Laser Induced Plasma Spectroscopy

摘要

Laser induced plasma spectroscopy (LIPS) was applied to direct multielement analysis of chemical species in a hydrogen-air diffusion flame. The plasma was generated by focusing the second harmonic radiation from a Nd:YAG laser at a wavelength of 532 nm and the dispersed plasma emission was detected by a multi-channel spectrometer. The results of LIPS measurements for the atomic emission intensities of hydrogen and oxygen, normalized by that of nitrogen, were in good agreement with those of numerical simulation. The present results show that LIPS has a high potential for the quantitative elemental analysis of chemical species in a flame.