Reduction of self-absorption in femtosecond laser-induced breakdown spectroscopy using spark discharge

被引：4
|
作者：
Wang, Qiuyun [1 ]
Chen, Anmin [1 ]
Liu, Yitong [1 ]
Gao, Xun [2 ]
Jin, Mingxing [1 ]
机构：
[1] Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Peoples R China
[2] Changchun Univ Sci & Technol, Sch Sci, Changchun 130022, Peoples R China
来源：
PHYSICS OF PLASMAS | 2021年 / 28卷 / 08期
基金：
中国国家自然科学基金;
关键词：
SPECTRAL-LINES; OPTICAL-EMISSION; RESONANCE LINES; INDUCED PLASMA; ALUMINUM; COEFFICIENTS;
D O I：
10.1063/5.0051244
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The self-absorption effect of femtosecond laser-induced breakdown spectroscopy (LIBS) of aluminum with and without spark discharge is investigated in air. The measured time-resolved spectra show strong self-absorption/self-reversal in the absence of spark discharge. Still, when spark discharge is used to enhance the spectral intensity of LIBS, almost no self-reversal effect can be observed from time-resolved spectra. The results show that spark discharge can effectively reduce the self-absorption effect and improve spectral intensity in femtosecond-LIBS. Published under an exclusive license by AIP Publishing.
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页数：6
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