Influence of target temperature on H alpha line of laser-induced silicon plasma in air

被引：24

作者：

Zhang, Dan ^{[1
,2
]}

Chen, Anmin ^{[1
,2
]}

Wang, Qiuyun ^{[1
,2
]}

Wang, Ying ^{[1
,2
]}

Qi, Hongxia ^{[1
,2
]}

Li, Suyu ^{[1
,2
]}

Jiang, Yuanfei ^{[1
,2
]}

Jin, Mingxing ^{[1
,2
]}

机构：

[1] Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Jilin, Peoples R China

[2] Jilin Univ, Jilin Prov Key Lab Appl Atom & Mol Spect, Changchun 130012, Jilin, Peoples R China

来源：

PHYSICS OF PLASMAS | 2018年 / 25卷 / 08期

基金：

中国国家自然科学基金;

关键词：

INDUCED BREAKDOWN SPECTROSCOPY; INDUCED CU PLASMA; OPTICAL-EMISSION; SAMPLE TEMPERATURE; ENHANCEMENT; SPECTROMETRY;

D O I：

10.1063/1.5040895

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：

This study mainly discusses the effect of target temperature on the emission intensity of the H alpha line in laser-induced silicon plasma in an atmospheric environment. The sample was uniformly heated to temperatures ranging from room temperature (22 degrees C) to a high temperature (300 degrees C) with laser energy ranging from 5.5 mJ to 11.5 mJ. Emission lines of Si (I), Si (II), and H (I) were observed. The H alpha line was attributable to a small amount of water vapor derived from natural humidity in the surrounding air. The H alpha line was widely used to measure electron density in laser-induced plasma. The results show that an increase in the sample temperature improved the spectral intensity of the Si line, whereas the emission intensity of the H alpha line declined. The reduction in the H alpha line was due to lower air density near the heated target surface. This investigation enhances the understanding of laser-induced breakdown spectroscopy applications at higher sample temperatures. Published by AIP Publishing.

引用

页数：6

共 43 条

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