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空气及水汽的激光诱导击穿光谱特性实验研究
引用本文:丁慧林,高立新,郑海洋,王颖萍,黄腾,丁蕾,张为俊,方黎.空气及水汽的激光诱导击穿光谱特性实验研究[J].光谱学与光谱分析,2010,30(1).
作者姓名:丁慧林  高立新  郑海洋  王颖萍  黄腾  丁蕾  张为俊  方黎
作者单位:中国科学院安徽光学精密机械研究所,环境光谱学实验室,安徽合肥230031
基金项目:国防科技工业局,中国科学院创新基础基金项目;;国家自然科学基金项目(20677056)资助
摘    要:以大气颗粒物测量为目标,实验研究了作为背景的空气分子的激光诱导击穿光谱(laser inducedbreakdown spectrometry,LIBS),以NIST原子发射谱线数据库为参考,对其中的O,N,H等主要元素的特征谱线进行了标识。研究了CCD光谱仪实验参数对空气等离子体发射谱线的影响,得出积分延时大于7μs时可以较好地减小空气分子所产生的干扰谱线,积分时间宽度大于仪器最小值(1.1 ms)时对谱线信号强度影响较小等结论。还研究了水汽的激光诱导击穿光谱,分析了O,N,H等元素的发射谱线信号强度的变化,发现H的发射谱线信号强度与水汽含量之间具有很好的线性关系。这些结果对于在大气环境条件下,对大气颗粒物的识别具有重要的指导意义。

关 键 词:激光诱导击穿光谱(LIBS)  大气颗粒物  延时  积分时间宽度  相对湿度  

Experimental Investigation of Atmosphere and Water Vapor with Laser Induced Breakdown Spectroscopy
DING Hui-lin,GAO Li-xin,ZHENG Hai-yang,WANG Ying-ping,HUANG Teng,DING Lei,ZHANG Wei-jun,FANG Li.Experimental Investigation of Atmosphere and Water Vapor with Laser Induced Breakdown Spectroscopy[J].Spectroscopy and Spectral Analysis,2010,30(1).
Authors:DING Hui-lin  GAO Li-xin  ZHENG Hai-yang  WANG Ying-ping  HUANG Teng  DING Lei  ZHANG Wei-jun  FANG Li
Abstract:The present article investigated the laser induced breakdown spectra of atmosphere molecules as background spectrum for the measurement of airborne particles.The authors detailedly analyzed the spectral lines of oxygen,nitrogen and hydrogen in the laser induced breakdown spectra of atmosphere molecules corresponding to the National Institute of Standards and Technology atomic spectroscopy database line data.In addition,the authors studied the intensity of emitted spectral lines induced by laser breakdown pr...
Keywords:Laser-induced breakdown spectroscopy(LIBS)  Airborne particles  Delay time  Signal integration width  Relative humidity(RH)
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