量子电子学报 ›› 2024, Vol. 41 ›› Issue (3): 455-462.doi: 10.3969/j.issn.1007-5461.2024.03.005

• "LIBS 关键技术与应用"专辑 • 上一篇    下一篇

基于萨哈-玻尔兹曼图与自吸收校正的单点修正激光诱导击穿光谱

胡桢麟 1#, 王天泽 1#, 郭连波 2*, 林楠 1*   

  1. ( 1 中国科学院上海光学精密机械研究所强场激光物理国家重点实验室, 上海 201800; 2 华中科技大学武汉光电国家研究中心, 湖北 武汉 430074 )
  • 收稿日期:2023-10-19 修回日期:2023-11-13 出版日期:2024-05-28 发布日期:2024-05-28
  • 通讯作者: E-mail: lbguo@hust.edu.cn; nanlin@siom.ac.cn E-mail:E-mail: lbguo@hust.edu.cn; nanlin@siom.ac.cn
  • 作者简介:胡桢麟 ( 1995 - ), 浙江宁波人, 博士生, 主要从事激光诱导击穿光谱、激光等离子体诊断等方面的研究。E-mail: huzhenlin@siom.ac.cn; 王天泽 ( 1993 - ), 河北保定人, 研究生, 主要从事强激光与物质相互作用等方面的研究。E-mail: tzwang@siom.ac.cn
  • 基金资助:
    国家自然科学基金 (62075069, 62375101), 国家重点研发计划(2023YFF0714905), 中国博士后科学基金第74批面上资助项目 (2023M743643), 国家资助博士后研究人员计划 (GZB20230791)

One‐point calibration LIBS based on Saha‐Boltzmann plot and self‐absorption correction

HU Zhenlin 1#, WANG Tianze 1#, GUO Lianbo 2*, LIN Nan 1*   

  1. ( 1 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; 2 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China )
  • Received:2023-10-19 Revised:2023-11-13 Published:2024-05-28 Online:2024-05-28

摘要: 为进一步提高单点修正激光诱导击穿光谱 (OPC-LIBS) 的定量分析精度, 提出了基于萨哈-玻尔兹曼图与自 吸收校正的OPC-LIBS方法, 利用该方法对两个钛合金样品中的Ti、V和Al元素进行了定量分析, 并将其定量结果与 基于玻尔兹曼图的OPC-LIBS、 基于萨哈-玻尔兹曼图的OPC-LIBS以及基于玻尔兹曼图和自吸收校正的OPC-LIBS 的结果进行了对比分析。研究结果表明, 所提出的改进方法在4种方法中可获得最小的定量误差, 测量两个钛合金 样品中3种元素的平均相对误差 (MREs) 分别为4.11%和3.99%, 证明所提出的改进方法可有效提高OPC-LIBS的定 量分析精度。

关键词: 光谱学, 单点修正激光诱导击穿光谱, 萨哈-玻尔兹曼图, 自吸收校正, 等离子体温度

Abstract: To further improve the quantitative analysis accuracy of one-point calibration laser-induced breakdown spectroscopy (OPC-LIBS), the OPC-LIBS based on Saha-Boltzmann plot and self-absorption correction was proposed. Ti, V and Al in two titanium alloy samples were quantified using the method, and the quantitative results were compared with those of OPC-LIBS based on Boltzmann plot, OPC-LIBS based on Saha-Boltzmann plot, and OPC-LIBS based on Boltzmann plot and self-absorption correction. The results show that the proposed method can obtain the smallest quantitative error among the four methods, with mean relative errors (MREs) of 4.11% and 3.99% for the three elements in two titanium alloy samples, respectively, indicating that the proposed method can effectively improve the quantitative analysis accuracy of OPC-LIBS.

Key words: spectroscopy, one-point calibration laser-induced breakdown spectroscopy, Saha-Boltzmann plot, self-absorption correction, plasma temperature

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