Combination of spark discharge and nanoparticle-enhanced laser-induced plasma spectroscopy  

作　　者：Qing-Xue Li Dan Zhang Yuan-Fei Jiang Su-Yu Li An-Min Chen Ming-Xing Jin 李庆雪;张丹;姜远飞;李苏宇;陈安民;金明星(Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China)

机构地区：[1]Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China

出　　处：《Chinese Physics B》2022年第8期494-499,共6页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2019YFA0307701);the National Natural Science Foundation of China(Grant Nos.11674128,11674124,and 11974138);the Jilin Provincial Scientific and Technological Development Program,China(Grant No.20170101063JC)。

摘　　要：A combination of spark discharge and nanoparticle-enhanced laser-induced plasma spectroscopy is investigated.Depositing Au nanoparticles at the surface of a brass target can enhance the coupling of the target and the laser.More atoms in the brass sample are excited.As a secondary excitation source,spark discharge reheats the generated plasma,which further amplifies the enhancement results of nanoparticles.The spectral intensity with the spark discharge increases more obviously with nanoparticle concentration increasing than without the spark discharge.Also,plasma temperature and electron density are calculated by the Boltzmann plot and Stark broadening.The changes in the plasma temperature and electron density are consistent with the spectral emission changes.

关 键 词：laser-induced plasma spectroscopy spark discharge NANOPARTICLE spectral enhancement 

分 类 号：TN249[电子电信—物理电子学] O53[理学—等离子体物理] O657.3[理学—物理]