中国物理B ›› 2022, Vol. 31 ›› Issue (8): 85201-085201.doi: 10.1088/1674-1056/ac597a

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

Qing-Xue Li(李庆雪), Dan Zhang(张丹), Yuan-Fei Jiang(姜远飞), Su-Yu Li(李苏宇), An-Min Chen(陈安民), and Ming-Xing Jin(金明星)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2021-12-08 修回日期:2022-02-13 接受日期:2022-03-02 出版日期:2022-07-18 发布日期:2022-07-23
  • 通讯作者: An-Min Chen, Ming-Xing Jin E-mail:amchen@jlu.edu.cn;mxjin@jlu.edu.cn
  • 基金资助:
    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), and the Jilin Provincial Scientific and Technological Development Program, China (Grant No. 20170101063JC).

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

Qing-Xue Li(李庆雪), Dan Zhang(张丹), Yuan-Fei Jiang(姜远飞), Su-Yu Li(李苏宇), An-Min Chen(陈安民), and Ming-Xing Jin(金明星)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • Received:2021-12-08 Revised:2022-02-13 Accepted:2022-03-02 Online:2022-07-18 Published:2022-07-23
  • Contact: An-Min Chen, Ming-Xing Jin E-mail:amchen@jlu.edu.cn;mxjin@jlu.edu.cn
  • Supported by:
    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), and 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

Abstract: 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.

Key words: laser-induced plasma spectroscopy, spark discharge, nanoparticle, spectral enhancement

中图分类号:  (Plasma production and heating by shock waves and compression)

  • 52.50.Lp
52.38.Mf (Laser ablation) 32.30.Jc (Visible and ultraviolet spectra) 42.62.Fi (Laser spectroscopy)