Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7223694 | Optik - International Journal for Light and Electron Optics | 2018 | 7 Pages |
Abstract
The experimental parameters for observing the characteristic of laser induced breakdown (LIB) plasma are optimized in the atmospheric environment. It shows that when the laser pulse energy is 21â¯mJ, the focal length of lens is 15â¯cm and the sample is 2â¯mm in front of the lens focus, the spectral intensity and the ratio of signal to noise (SBR) of LIB plasma are highest. It is helpful to improve the detection accuracy of the technique of laser induced breakdown spectroscopy (LIBS). The LIB spectra of a special soil samples are observed with the optimized parameters. The elements Fe, Mn, Ca, W, Co, Ti, Si, Cr and V contained in the soil sample are determined based on the spectral peaks. The electron temperature in plasma and the quantities of Mn, Ca in the soil are obtained further.
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Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Guiyin Zhang, Huan Song, Yang Liu, Zhanlong Zhao, Songtao Li, Zhi Ren,