研究目的
To enhance the emission spectrum intensity of laser-induced plasma by combining cavity-enhanced laser-induced breakdown spectroscopy (LIBS) with nanoparticles-enhanced LIBS (NELIBS).
研究成果
The combination of cavity confinement and NELIBS significantly enhances the spectral line intensity, SNR, electron temperature, and electron density of laser-induced plasma, improving the sensitivity and accuracy of LIBS technology for detecting trace elements.
研究不足
The study focused on the combination of cavity confinement and NELIBS for enhancing LIBS performance, but other enhancement methods and their combinations were not explored. The optimal cavity size was determined for a fixed thickness, but the effect of varying thickness was not investigated.
1：Experimental Design and Method Selection:
A method combining cavity-enhanced LIBS with NELIBS was proposed to enhance the emission spectrum intensity of laser-induced plasma.
2：Sample Selection and Data Sources:
Brass with Au-nanoparticles deposited on the surface was used under different cavity confinement conditions.
3：List of Experimental Equipment and Materials:
ChemReveal benchtop laser induced breakdown spectrometer from TSI USA, Nd: YAG laser (Quantel Ultra 50), seven-channel wide-spectrum spectrometer from Avantes, Au-nanoparticles reagent.
4：Experimental Procedures and Operational Workflow:
The brass was placed under different cavity confinement areas, and the characteristics of laser-induced plasma spectroscopy were analyzed.
5：Data Analysis Methods:
The spectral line intensities, enhancement factors, SNR, electron temperature, and electron density were analyzed.
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