%A SUN Dui-xiong;SU Mao-gen;DONG Chen-zhong;MA Yun-yun;YANG Feng;CAO Shi-quan %T Spectroscopic Study of Laser Induced Breakdown Plasma Spectroscopy in Air and Semi-Empirical Simulation %0 Journal Article %D 2014 %J SPECTROSCOPY AND SPECTRAL ANALYSIS %R 10.3964/j.issn.1000-0593(2014)12-3230-05 %P 3230-3234 %V 34 %N 12 %U {https://www.gpxygpfx.com/CN/abstract/article_7379.shtml} %8 2014-12-01 %X A laser induced breakdown spectroscopy experiment was carried out using Nd∶YAG laser in air, and time-resolved spectra were measured. Based on local thermodynamic equilibrium assumption, a method used to simulate LIBS spectra is proposed. A LIBS spectrum of air in the wavelength range of 700~900 nm was simulated using this method. A good agreement between experiment and simulation was obtained, and moreover, the relative concentrations of the N, O and Ar in air were obtained.