基于铅合金的激光诱导击穿光谱实验系统设计与优化  

Design and Optimization of Laser Induced Breakdown Spectroscopy Experiment System Based on Metal Samples

作　　者：丁宇 赵兴强[1,2,3] 罗勇[1,2,3] 韦中 周旺平[1,2,3] DING Yu;ZHAO Xingqiang;LUO Yong;WEI Zhong;ZHOU Wangping(School of Automation,Nanjing University of Information and Science,Nanjing 210044,China;Jiangsu Collaborative Innovation Center for Atmospheric Environment and Equipment Technology,Nanjing University of Information and Science,Nanjing 210044,China;Jiangsu Engineering Research Center on Meteorological Energy Using and Control,Nanjing University of Information and Science,Nanjing 210044,China)

机构地区：[1]南京信息工程大学自动化学院,南京210044 [2]南京信息工程大学江苏省大气环境与装备技术协同创新中心,南京210044 [3]南京信息工程大学江苏省气象能源利用与控制工程技术研究中心,南京210044

出　　处：《实验室研究与探索》2023年第2期65-68,73,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(62105160);教育部新工科研究与实践项目(E-SXWLHXLX20202612)。

摘　　要：设计了一款基于铝合金样品的激光诱导击穿光谱实验系统。该系统以波长为1 064 nm的Nd:YAG纳秒脉冲固体激光器作为激光光源,采用双通道光谱仪作为分光及检测部件,对铝合金样品开展了光谱数据采集以及实验参数优化工作。实验选定Al I 396.15 nm为分析谱线,以信号强度及信背比作为评价指标,对激光能量、延迟时间、光纤探头接收距离和激光激发次数等实验参数进行了优化。结果表明,该系统的最佳实验参数分别为:激光能量为625 V(70 mJ);延迟时间为3μs;光纤探头接收距离为47 mm;激光每组激发6次。该实验系统有效提升了实验参数优化的效率,同时也为该类仪器设备的系统优化方法奠定基础。An experimental system for aluminum alloy analysis based on laser-induced breakdown spectroscopy is designed.The experimental system uses a Nd:YAG nanosecond pulsed solid-state laser with a wavelength of 1064 nm to be the excitation source,and a dual-channel spectrometer the spectroscopic and detection components.Based on this experimental system,spectral data acquisition and experimental parameter optimization are carried out for aluminum alloy samples.Al I 39615 nm is selected as the analytical spectral line,and the signal intensity and signal-to-background ratio are used as evaluation indicators to optimize the parameters,including laser energy,delay time,fiber probe distance and laser excitation times.The results show that the optimal experimental parameters of the system are laser energy 625 V(70 mJ),delay time 3μs,fiber probe distance 47 mm,laser excitation 6 times per group.The experimental system effectively improves the efficiency of experimental parameter optimization,lays the foundation for the system optimization method of this type of equipment.

关 键 词：激光诱导击穿光谱 参数优化 实验系统 光谱采集 

分 类 号：G642.423[文化科学—高等教育学]