Main > Chinese Journal of Lasers >  Volume 47 >  Issue 9 >  Page 0911001 > Article
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  • Received: Mar. 30, 2020

    Accepted: Apr. 15, 2020

    Posted: Sep. 1, 2020

    Published Online: Sep. 16, 2020

    The Author Email: Chen Weifang (meewfchen@nuaa.edu.cn)

    DOI: 10.3788/CJL202047.0911001

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    Lijian Pan, Weifang Chen, Yanfeng Zhou, Rongfang Cui. Parameter Optimization of Laser-Induced Breakdown Spectroscopy Experimental Device Based on Response Surface Methodology[J]. Chinese Journal of Lasers, 2020, 47(9): 0911001

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  • Table 1. Factors and levels for single factor experiment

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    Table 1. Factors and levels for single factor experiment

    FactorValue
    Laser energy /mJ80,90,100,110,120
    Delay time /μs1,2,3,4,5
    Depth of focus /mm-1,0,1,2,3
  • Table 2. Factors and levels for response surface methodology

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    Table 2. Factors and levels for response surface methodology

    FactorVariablesymbolLevel
    -101
    Laser energy /mJX1100110120
    Delay time /μsX2123
    Depth of focus /mmX3123
  • Table 3. Design parameters and results of experiments

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    Table 3. Design parameters and results of experiments

    Experiment No.X1 / mJX2 /μsX3 / mmRSBR
    1120236.42
    2110227.12
    3110227.31
    4120127.02
    5110316.61
    6110227.42
    7100216.48
    8110116.85
    9100236.29
    10110336.45
    11110227.39
    12110227.27
    13100326.54
    14120326.87
    15120217.04
    16100126.35
    17110136.56
  • Table 4. Analysis of variance

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    Table 4. Analysis of variance

    SourceSum of squareDegree of freedomMean square errorFPSignificant
    Model2.3190.2617.430.0005Y
    X10.3610.3624.240.0017Y
    X20.01210.0120.820.3965
    X30.2010.2013.470.0080Y
    X1X20.02910.0291.960.2040
    X1X30.04610.0463.140.1198
    X2X30.004210.00420.290.6088
    X120.4710.4731.790.0008Y
    X220.3110.3121.380.0024Y
    X320.7110.7148.290.0002Y
    Residual0.1070.015
    Lack of fit0.04730.0161.130.4380N
    Pure error0.05640.014

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