Effect of distances between lens and sample surface on laser-induced breakdown spectroscopy with spatial confinement

doi:10.1088/2058-6272/aabc5e

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	Effect of distances between lens and sample surface on laser-induced breakdown spectroscopy with spatial confinement
	Jiang, Z. H.; Shao, J. F.; Wang, T. F.; Guo, J.; Zhang, D.; Chen, A. M.; Jin, M. X.
	2018
发表期刊	Plasma Science & Technology
ISSN	1009-0630
卷号	20 期号:8 页码:8
摘要	Spatial confinement can significantly enhance the spectral intensity of laser-induced plasma in air. It is attributed to the compression of plasma plume by the reflected shockwave. In addition, optical emission spectroscopy of laser-induced plasma can also be affected by the distance between lens and sample surface. In order to obtain the optimized spectral intensity, the distance must be considered. In this work, spatially confined laser-induced silicon plasma by using a Nd: YAG nanosecond laser at different distances between lens and sample surface was investigated. The laser energies were 12 mJ, 16 mJ, 20 mJ, and 24 mJ. All experiments were carried out in an atmospheric environment. The results indicated that the intensity of Si (I) 390.55 nm line firstly rose and then dropped with the increase of lens-to-sample distance. Moreover, the spectral peak intensity with spatial confinement was higher than that without spatial confinement. The enhancement ratio was approximately 2 when laser energy was 24 mJ.
关键词	laser-induced breakdown spectroscopy LIBS spatial confinement distance of lens-to-sample signal enhancement optical-emission induced plasmas cu plasma ablation enhancement spectrometry spectra argon Physics
DOI	10.1088/2058-6272/aabc5e
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60964
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Jiang, Z. H.,Shao, J. F.,Wang, T. F.,et al. Effect of distances between lens and sample surface on laser-induced breakdown spectroscopy with spatial confinement[J]. Plasma Science & Technology,2018,20(8):8.
APA	Jiang, Z. H..,Shao, J. F..,Wang, T. F..,Guo, J..,Zhang, D..,...&Jin, M. X..(2018).Effect of distances between lens and sample surface on laser-induced breakdown spectroscopy with spatial confinement.Plasma Science & Technology,20(8),8.
MLA	Jiang, Z. H.,et al."Effect of distances between lens and sample surface on laser-induced breakdown spectroscopy with spatial confinement".Plasma Science & Technology 20.8(2018):8.

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