中国物理B ›› 2016, Vol. 25 ›› Issue (6): 65201-065201.doi: 10.1088/1674-1056/25/6/065201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Laser-induced breakdown spectroscopy applied to the characterization of rock by support vector machine combined with principal component analysis

Hong-Xing Yang(杨洪星), Hong-Bo Fu(付洪波), Hua-Dong Wang(王华东), Jun-Wei Jia(贾军伟), Markus W Sigrist, Feng-Zhong Dong(董凤忠)   

  1. 1 Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
    2 University of Science and Technology of China, Hefei 230026, China;
    3 ETH Zürich, Institute for Quantum Electronics, Otto-Stern-Weg 1, CH-8093 Zurich, Switzerland
  • 收稿日期:2016-01-08 修回日期:2016-03-01 出版日期:2016-06-05 发布日期:2016-06-05
  • 通讯作者: Feng-Zhong Dong E-mail:fzdong@aiofm.ac.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 11075184), the Knowledge Innovation Program of the Chinese Academy of Sciences (CAS) (Grant No. Y03RC21124), and the CAS President's International Fellowship Initiative Foundation (Grant No. 2015VMA007).

Laser-induced breakdown spectroscopy applied to the characterization of rock by support vector machine combined with principal component analysis

Hong-Xing Yang(杨洪星)1, Hong-Bo Fu(付洪波)1,2, Hua-Dong Wang(王华东)1,2, Jun-Wei Jia(贾军伟)1,2, Markus W Sigrist3, Feng-Zhong Dong(董凤忠)1, 2   

  1. 1 Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
    2 University of Science and Technology of China, Hefei 230026, China;
    3 ETH Zürich, Institute for Quantum Electronics, Otto-Stern-Weg 1, CH-8093 Zurich, Switzerland
  • Received:2016-01-08 Revised:2016-03-01 Online:2016-06-05 Published:2016-06-05
  • Contact: Feng-Zhong Dong E-mail:fzdong@aiofm.ac.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 11075184), the Knowledge Innovation Program of the Chinese Academy of Sciences (CAS) (Grant No. Y03RC21124), and the CAS President's International Fellowship Initiative Foundation (Grant No. 2015VMA007).

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摘要：

Laser-induced breakdown spectroscopy (LIBS) is a versatile tool for both qualitative and quantitative analysis. In this paper, LIBS combined with principal component analysis (PCA) and support vector machine (SVM) is applied to rock analysis. Fourteen emission lines including Fe, Mg, Ca, Al, Si, and Ti are selected as analysis lines. A good accuracy (91.38% for the real rock) is achieved by using SVM to analyze the spectroscopic peak area data which are processed by PCA. It can not only reduce the noise and dimensionality which contributes to improving the efficiency of the program, but also solve the problem of linear inseparability by combining PCA and SVM. By this method, the ability of LIBS to classify rock is validated.

关键词: laser-induced breakdown spectroscopy (LIBS), principal component analysis (PCA), support vector machine (SVM), lithology identification

Abstract:

Laser-induced breakdown spectroscopy (LIBS) is a versatile tool for both qualitative and quantitative analysis. In this paper, LIBS combined with principal component analysis (PCA) and support vector machine (SVM) is applied to rock analysis. Fourteen emission lines including Fe, Mg, Ca, Al, Si, and Ti are selected as analysis lines. A good accuracy (91.38% for the real rock) is achieved by using SVM to analyze the spectroscopic peak area data which are processed by PCA. It can not only reduce the noise and dimensionality which contributes to improving the efficiency of the program, but also solve the problem of linear inseparability by combining PCA and SVM. By this method, the ability of LIBS to classify rock is validated.

Key words: laser-induced breakdown spectroscopy (LIBS), principal component analysis (PCA), support vector machine (SVM), lithology identification

中图分类号:  (Thermodynamics of plasmas)

  • 52.25.Kn
52.50.Jm (Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))