Influence of sample temperature on the expansion dynamics of laser-induced germanium plasma

被引：14
|
作者：
Liu, Yang [1 ,2 ]
Tong, Yue [3 ]
Wang, Ying [1 ,2 ]
Zhang, Dan [1 ,2 ]
Li, Suyu [1 ,2 ]
Jiang, Yuanfei [1 ,2 ]
Chen, Anmin [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
[3] Aviat Univ Air Force, Changchun 130021, Jilin, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2017年 / 19卷 / 12期
基金：
中国国家自然科学基金;
关键词：
LIBS; plasma plume; sample temperature; expansion dynamics; INDUCED BREAKDOWN SPECTROSCOPY; OPTICAL-EMISSION; QUANTITATIVE-ANALYSIS; MAGNETIC-FIELD; LIBS ANALYSIS; SINGLE; STEEL; ABLATION; SPECTROMETRY; ALUMINUM;
D O I：
10.1088/2058-6272/aa8acc
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：
In this paper, we investigated the influence of sample temperature on the expansion dynamics and the optical emission spectroscopy of laser-induced plasma, and Ge was selected as the test sample. The target was heated from room temperature (22 degrees C) to 300 degrees C, and excited in atmospheric environment by using a Q-Switched Nd:YAG pulse laser with the wavelength of 1064 nm. To study the plasma expansion dynamics, we observed the plasma plume at different laser energies (5.0, 7.4 and 9.4 mJ) and different sample temperatures by using time-resolved image. We found that the heated target temperature could accelerate the expansion of plasma plume. Moreover, we also measured the effect of target temperature on the optical emission spectroscopy and signal-to-noise ratio.
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页数：8
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