| 光谱学与光谱分析 |
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| Effect of Flat-Mirror Device on Laser-Induced Plasma Radiation Characteristics |
| CHEN Jin-zhong, BAI Jin-ning, CHEN Zhen-yu, CHENG Chen, SUN Jiang, WEI Yan-hong |
| College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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Abstract To improve the quality of laser-induced breakdown spectroscopy, flat-mirror device was proposed. The effects of flat-mirror device on the radiation characteristics of laser-induced plasma were studied. The experimental results showed that when the device consisted of three flat-mirrors placed around the plasma, the spectral line intensity of Mg, Fe, Ba, Ti and Al increases by about 116.2%, 96.43%, 90.93%, 102.1% and 98.57% than that without flat-mirror device, and the signal-to-noise raises by around 39.17%, 32.48%, 38.07%, 39.95% and 21.30%，respectively. By measuring the plasma parameters，the mechanism of the radiation enhancement obtained with the device consisting of three flat-mirrors was explained. This method was an effective way to improve the detection capacity of LIBS.
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Received: 2012-12-11
Accepted: 2013-03-28
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Corresponding Authors:
CHEN Jin-zhong
E-mail: chenjinzhongcn@126.com;jinning235@126.com
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