Stability improvement of laser-induced breakdown spectroscopy based on dual-line internal standard

LIU Li

doi:10.7510/jgjs.issn.1001-3806.2015.01.018

Dual-line internal standard algorithm was proposed to improve the stability of laser-induced breakdown spectroscopy. The intensity of analysis line was normalized by the sum of the intensity of both the internal standard spectral lines in order to enhance the stability of the spectrum. The line Si Ⅰ 288.16nm of silicon element in steel was used for theoretical calculation and numerical simulation of dual-line internal standard algorithm, finally the universality of the algorithm was validated by taking manganese and copper lines as an example. The results show that, under the typical temperature and electron density in the laser-induced plasma, the dual-line internal standard algorithm can more effectively improve the stability of spectral lines than ordinary internal standard method.

Stability improvement of laser-induced breakdown spectroscopy based on dual-line internal standard

1. College of Physics Science and Engineering Technology, Yichun University, Yichun 336000, China

Received Date: 2014-01-13

Accepted Date: 2014-03-24

Available Online: 2015-01-25

Abstract: Dual-line internal standard algorithm was proposed to improve the stability of laser-induced breakdown spectroscopy. The intensity of analysis line was normalized by the sum of the intensity of both the internal standard spectral lines in order to enhance the stability of the spectrum. The line Si Ⅰ 288.16nm of silicon element in steel was used for theoretical calculation and numerical simulation of dual-line internal standard algorithm, finally the universality of the algorithm was validated by taking manganese and copper lines as an example. The results show that, under the typical temperature and electron density in the laser-induced plasma, the dual-line internal standard algorithm can more effectively improve the stability of spectral lines than ordinary internal standard method.

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Reference (12)

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Stability improvement of laser-induced breakdown spectroscopy based on dual-line internal standard

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