物象重叠法对激光诱导锌等离子体光谱的影响  

Study on the influence of object-image overlap method on laser-induced Zn plasma spectra

作　　者：彭玲玲 徐异鸣 刘小亮 胡东 赵永龙 PENG Ling-ling;XU Yi-ming;LIU Xiao-liang;HU Dong;ZHAO Yong-long(College of Nuclear Science and Engineering,East China University of Technology,Nanchang 330013,Jiangxi,China;Shanghai Jianqiao University,Shanghai 200000,China;China National Nuclear Industry Corporation 404,Jiayuguan 735100,Gansu,China)

机构地区：[1]东华理工大学核科学与工程学院,江西南昌330013 [2]上海建桥学院,上海200000 [3]中核四〇四有限公司,甘肃嘉峪关735100

出　　处：《西北师范大学学报（自然科学版）》2022年第2期46-51,共6页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(12005037);江西省质谱科学与仪器重点实验室开放基金资助项目(JXMS202110)。

摘　　要：为探索物象重叠法对激光诱导击穿光谱(Laser induced breakdown spectroscopy,LIBS)的影响,以Zn靶作为烧蚀样品,研究大气环境中加入光学球面镜时激光诱导Zn等离子体的光谱强度、等离子体温度和电子密度.实验结果表明,当加入球面镜在等离子层处成等大倒立实像后,靠近靶样品处和等离子体边缘处的等离子体光谱强度增强,等离子体温度和电子密度略增大,其中靠近靶样品处的等离子体光谱强度增强因子达到12.Increasing the signal intensity of laser-induced breakdown spectroscopy(LIBS)is an important way to improve the sensitivity of LIBS.In order to explore the effect of the object-image overlap method on the laser induced breakdown spectroscopy(LIBS),the spectral intensity,plasma temperature and electron density of laser-induced Zn plasma were studied when an optical spherical mirror is added to the atmosphere.The experimental results show that when a spherical mirror is added to form an equal large inverted real image at the plasma layer,the plasma spectrum intensity near the target sample and the edge of the plasma increases,and the plasma temperature and electron density increase slightly.The enhancement factor of the plasma spectrum intensity reaches 12.

关 键 词：激光诱导击穿光谱 等离子体 光谱增强 球面镜 

分 类 号：O433[机械工程—光学工程]