Investigation on Laser-Induced Coal Particle Flow Plasma Properties Acquired with Different Collection Angles
ZHANG Xi1, LU Ji-dong2*, PAN Gang2, PAN Feng-ping1, CHEN Shi-he1, YAO Shun-chun2, LUO Jia1, LU Wei-ye2, ZHONG Zi-ming2
1. Electric Power Research Institute of Guangdong Power Grid Co.，Ltd., Guangzhou 510080, China 2. School of Electric Power of South China University of Technology, Guangzhou 510640, China
Abstract：Laser-induced breakdown spectroscopy (LIBS) was applied to directly detect the coal particle flow. An investigation of the impact of different spectrometer detector angles measured from the laser incident axis on the plasma properties was conducted on the self-built two-phase particle flow experiment bench. Coal particle flow was used as the experimental sample. An analysis of the variation in the emission intensity and relative standard deviation (RSD) was carried out. The atomic spectral lines of C, Si and Al which are representative elements in coal were chosen as the analytical lines. Then the influence of the spectra acquired with different collection angles was discussed. The results demonstrated that the strong and stable intensity signal can be acquired in the collection angle range from 30° to 45°.
Key words：Laser induced breakdown spectroscopy;Coal particle flow;Collection angle;Spectral line intensity
张 曦1，陆继东2*，潘 刚2，潘凤萍1，陈世和1，姚顺春2，罗 嘉1，卢伟业2，钟子铭2 . 不同收光角度下煤粉颗粒流的LIBS光谱特性研究 [J]. 光谱学与光谱分析, 2013, 33(06): 1473-1476.
ZHANG Xi1, LU Ji-dong2*, PAN Gang2, PAN Feng-ping1, CHEN Shi-he1, YAO Shun-chun2, LUO Jia1, LU Wei-ye2, ZHONG Zi-ming2 . Investigation on Laser-Induced Coal Particle Flow Plasma Properties Acquired with Different Collection Angles. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(06): 1473-1476.
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