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

Yang LIU (刘杨); Yue TONG (佟悦); Ying WANG (王莹); Dan ZHANG (张丹); Suyu LI (李苏宇); Yuanfei JIANG (姜远飞); Anmin CHEN (陈安民); Mingxing JIN (金明星)

doi:10.1088/2058-6272/aa8acc

Plasma Science and Technology > 2017 > 19(12): 125501. > DOI: 10.1088/2058-6272/aa8acc

Yang LIU (刘杨), Yue TONG (佟悦), Ying WANG (王莹), Dan ZHANG (张丹), Suyu LI (李苏宇), Yuanfei JIANG (姜远飞), Anmin CHEN (陈安民), Mingxing JIN (金明星). Influence of sample temperature on the expansion dynamics of laser-induced germanium plasma[J]. Plasma Science and Technology, 2017, 19(12): 125501. DOI: 10.1088/2058-6272/aa8acc

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

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, People’s Republic of China 2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University), Changchun 130012, People’s Republic of China 3 Aviation University of Air Force, Changchun 130021, People’s Republic of China

Funds: We acknowledge the support by National Natural Science Foundation of China (Grant Nos. 11674128, 11504129, and 11474129); Jilin Province Scientific and Technological Development Program, China (Grant No. 20170101063JC); the Thirteenth Five-Year Scientific and Technological Research Project of the Education Department of Jilin Province, China (2016, No. 400).

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Received Date: July 06, 2017

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Abstract

Abstract

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.
- LIBS,
- plasma plume,
- sample temperature,
- expansion dynamics

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References (42)

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