title: [Study on the automatic recognition method of elemental spectra in laser induced breakdown spetroscopy].
abstract: According to the spectral line broadening mechanism of laser induced breakdown spectroscopy, the emission lines from the standard spectral database of NIST were simulated, and they were compared with the spectral data of experiment. In the process of comparison similarity measure was used to measure the similarity between the simulative spectra and the experimental spectra. The automatic recognition method of elemental spectra was studied, and the spectral data of soil between 340 and 345 nm was recognized by computing the proportional coefficients of the spectral lines. Using principle of nonlinear least squares, the recognition process was completed. The feasibility and the advantage of the method were proved by the results of experiment.
authors.affiliation: Key Laboratory of Environment Optics & Technology, Institute of Anhui Optics Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China. ltuoliu@aiofm.ac.cn
authors.forename: Li-tuo
authors.initials: LT
authors.lastname: Liu
authors.forename: Jian-guo
authors.initials: JG
authors.lastname: Liu
authors.forename: Nan-jing
authors.initials: NJ
authors.lastname: Zhao
authors.forename: Cui-ping
authors.initials: CP
authors.lastname: Lu
authors.forename: Dong
authors.initials: D
authors.lastname: Chen
authors.forename: Huan
authors.initials: H
authors.lastname: Shi
authors.forename: Chun-long
authors.initials: CL
authors.lastname: Wang
authors.forename: Yu-jun
authors.initials: YJ
authors.lastname: Zhang
authors.forename: Wen-qing
authors.initials: WQ
authors.lastname: Liu