Utilization of moderate cylindrical confinement for precision improvement of laser-induced breakdown spectroscopy signal.
Utilization of moderate cylindrical confinement for precision improvement of laser-induced breakdown spectroscopy signal.
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DOI：
10.1364/oe.20.0a1011
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发表时间：
2012-11
期刊：
影响因子：
3.8
通讯作者：
Zhe Wang;Z. Hou;S. Lui;Dong Jiang;Jianming Liu;Zheng Li
中科院分区：
文献类型：
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作者：
Zhe Wang;Z. Hou;S. Lui;Dong Jiang;Jianming Liu;Zheng Li
为了提高激光诱导击穿光谱(LIBS)的信号强度和精确度，采用中等圆柱腔对激光诱导等离子体进行正则化处理。制备了厚度为1.5 mm、直径为3 mm的聚四氟乙烯(PTFE)平板。它被紧密地放置在样品表面上，并通过孔的中心向样品发射激光脉冲。以煤为样品，验证了该构型既增强了谱线强度，又减小了谱线间的波动，在提高LIBS分析精度方面显示出巨大的潜力。
Moderate cylindrical cavity was used to regularize the laser-induced plasma for signal strength enhancement and precision improvement in laser-induced breakdown spectroscopy (LIBS). A polytetrafluoroethylene (PTFE) plate of 1.5 mm thickness with diameter of 3 mm was fabricated. It was placed closely on a sample surface and a laser pulse was shot through the center of the hole to the sample. Using coal as samples, it was verified that the configuration both enhanced the spectral line intensity and reduced shot-to-shot fluctuation, showing its great potential in improving the precision of LIBS analysis.