%A CHEN Jin-zhong;BAI Jin-ning;CHEN Zhen-yu;CHENG Chen;SUN Jiang;WEI Yan-hong %T Effect of Flat-Mirror Device on Laser-Induced Plasma Radiation Characteristics %0 Journal Article %D 2013 %J SPECTROSCOPY AND SPECTRAL ANALYSIS %R 10.3964/j.issn.1000-0593(2013)08-2039-04 %P 2039-2042 %V 33 %N 08 %U {https://www.gpxygpfx.com/CN/abstract/article_6460.shtml} %8 2013-08-01 %X 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.