Wang Yang-En
College of Physical Science and Technology, Yangtzeu University, Jingzhou 434023, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2013 May;33(5):1180-4.
In order to study the influence of delay time on laser-induced breakdown spectroscopy (LIBS), the relationship between the intensities of the spectral line and the delay time was discussed in theory, and the LIBS instrument manufactured by Applied Spectra Inc was used for testing the limestone certified reference sample GBW07716. The characteristic spectral line was analyzed with Mn I 357.788 nm, W II 364.141 nm, W I 407.436 nm, W I 426.938 nm and Co I 387.312 nm. It was demonstrated that the intensities of the spectral line decrease exponentially with the delay time,and the decrease speed is not the same for different spectral line. The intensities of the ion spectral line are stronger in an early stage, but decrease faster with the increase in delay time than the atomic spectral line. The experimental data fit with exponential law and the fitting R value is about 0.99.
为了研究延迟时间对激光诱导击穿光谱（LIBS）的影响，从理论上探讨了光谱线强度与延迟时间之间的关系，并使用Applied Spectra Inc制造的LIBS仪器对石灰石标准参考样品GBW07716进行测试。利用Mn I 357.788 nm、W II 364.141 nm、W I 407.436 nm、W I 426.938 nm和Co I 387.312 nm分析特征光谱线。结果表明，光谱线强度随延迟时间呈指数下降，且不同光谱线的下降速度不同。离子光谱线强度在早期较强，但随延迟时间增加比原子光谱线下降得更快。实验数据符合指数规律，拟合R值约为0.99。
