| 共线双脉冲激光诱导击穿光谱技术检测铝合金中的Cr和Mn |
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| 引用本文： | 杨瑞兆, 苏雪娇, 於有利, 等. 共线双脉冲激光诱导击穿光谱技术检测铝合金中的Cr和Mn[J]. 强激光与粒子束, 2018, 30: 099001. doi: 10.11884/HPLPB201830.180053 |
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| 作者姓名： | 杨瑞兆 苏雪娇 於有利 周卫东 |
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| 作者单位： | 浙江师范大学 浙江省光信息检测与显示技术研究重点实验室, 浙江 金华 321004 |
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| 基金项目： | 国家自然科学基金项目61178034国家自然科学基金项目51276100 |
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| 摘 要： | 采用两台波长1064 nm的调Q脉冲Nd ∶YAG激光器和多通道小型光纤光栅光谱仪，建立了一套共线双脉冲激光诱导击穿光谱分析装置。与单脉冲激光诱导技术相比，在最佳双脉冲时间延时8 μs时，Mn I 403.07 nm和Cr I 425.43 nm的光谱强度分别增加了14.3倍和17.2倍，以这两条谱线为分析线，铝合金中Mn和Cr的检测限分别由单脉冲时的73和94.5 μg/g降低至双脉冲时的3.76和4.26 μg/g，检测灵敏度提高了约20倍。
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| 关 键 词： | 激光诱导击穿光谱 铝合金 检测限 灵敏度 |
| 收稿时间： | 2018-02-07 |
| 修稿时间： | 2018-05-07 |
Double pulse laser-induced breakdown spectroscopy analysis of trace elements Cr and Mn in aluminum alloy |
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| Yang Ruizhao, Su Xuejiao, Yu Youli, et al. Double pulse laser-induced breakdown spectroscopy analysis of trace elements Cr and Mn in aluminum alloy[J]. High Power Laser and Particle Beams, 2018, 30: 099001. doi: 10.11884/HPLPB201830.180053 |
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| Authors: | Yang Ruizhao Su Xuejiao Yu Youli Zhou Weidong |
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| Affiliation: | Key Laboratory of Optical Information Detection and Display Technology of Zhejiang, Zhejiang Normal University, Jinhua 321004, China |
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| Abstract: | An experimental apparatus, which consists of two identical pulsed 1064 nm Nd: YAG lasers and a portable spectrometer, has been built for element analysis in aluminum alloy in collinear dual pulse laser induced breakdown spectroscopy (DP-LIBS) configuration. 14.3- and 17.2-fold enhanced line intensities have been observed for Mn I 403.07 nm and Cr I 425.43 nm respectively, compared to that of single-pulse laser induced breakdown spectroscopy. Based on the signal intensity enhancement, inter pulse delay time has been carefully optimized, which gives a value of about 8-9 μs. Using this collinear dual pulse laser induced breakdown spectroscopy apparatus, the calibration curves for quantitative measurement of Mn and Cr were derived, and the limits of detection for elements Mn and Cr are found to be 3.76 and 4.26 μg/g, respectively. |
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| Keywords: | DP-LIBS aluminum alloy limit of detection sensitivieness |
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