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

被引：0

作者：

刘杨 ^{[1
,2
]}

佟悦 ^{[3
]}

王莹 ^{[1
,2
]}

张丹 ^{[1
,2
]}

李苏宇 ^{[1
,2
]}

姜远飞 ^{[1
,2
]}

陈安民 ^{[1
,2
]}

金明星 ^{[1
,2
]}

机构：

[1] Institute of Atomic and Molecular Physics, Jilin University

[2] Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)

[3] Aviation University of Air Force

来源：

Plasma Science and Technology | 2017年 / 12期

基金：

中国国家自然科学基金;

关键词：

LIBS; plasma plume; sample temperature; expansion dynamics;

D O I：

暂无

中图分类号：

O53 [等离子体物理学];

学科分类号：

070204 ;

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 °C) to 300 °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.

引用

页码：85 / 92

页数：8