Enhancement effects of flat-mirror reflection on plasma radiation

被引：15
作者：
Chen, Jin-zhong [1 ]
Bai, Jin-ning [1 ]
Song, Guang-ju [1 ]
Sun, Jiang [1 ]
Deng, Ze-chao [1 ]
Wang, Ying-long [1 ]
机构：
[1] Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
来源：
APPLIED OPTICS | 2013年 / 52卷 / 25期
基金：
中国国家自然科学基金;
关键词：
LASER-INDUCED PLASMAS; OPTICAL-EMISSION; LIBS; SPECTROSCOPY;
D O I：
10.1364/AO.52.006295
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Laser-induced breakdown spectroscopy quality can be improved by using a nanosecond Nd:YAG laser pulse to excite soil samples. To investigate how flat-mirror reflection affects the radiation characteristics of laser-induced plasma, emission spectra of sample elements were recorded using a grating spectrometer and photoelectric detection system. Placing a planar mirror vertically on the sample surface (10 mm mirror to plasma-center axis distance) for flat-mirror reflection increased spectral line intensities of Mg, Al, Fe, and Ba by 93.06%, 159.63%, 93.43%, and 94.61%, respectively. Signal-to-noise ratio increased by 17.56%, 40.21%, 31.29%, and 30%. The radiation enhancement mechanism was clarified using measured plasma parameters. (C) 2013 Optical Society of America
引用
收藏
页码：6295 / 6299
页数：5
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