Spectroscopy and Spectral Analysis, Volume. 33, Issue 6, 1473(2013)
Investigation on Laser-Induced Coal Particle Flow Plasma Properties Acquired with Different Collection Angles
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°.
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ZHANG Xi, LU Ji-dong, PAN Gang, PAN Feng-ping, CHEN Shi-he, YAO Shun-chun, LUO Jia, LU Wei-ye, ZHONG Zi-ming. Investigation on Laser-Induced Coal Particle Flow Plasma Properties Acquired with Different Collection Angles[J]. Spectroscopy and Spectral Analysis, 2013, 33(6): 1473
Received: Sep. 9, 2012
Accepted: --
Published Online: Jun. 7, 2013
The Author Email: Xi ZHANG (zhangxi_sjtu@163.com)