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| 激光诱导击穿空气等离子体光谱及半经验理论模拟 | |
| 引用本文： | 孙对兄,苏茂根,董晨钟,马云云,杨峰,曹世权.激光诱导击穿空气等离子体光谱及半经验理论模拟[J].光谱学与光谱分析,2014,34(12):3230-3234. |
| 作者姓名： | 孙对兄 苏茂根 董晨钟 马云云 杨峰 曹世权 |
| 作者单位： | 1. 西北师范大学学报编辑部，甘肃 兰州 730070 2. 甘肃省原子分子物理与功能材料重点实验室，西北师范大学物理与电子工程学院，甘肃 兰州 730070 3. 兰州城市学院培黎工程技术学院，甘肃 兰州 730070 |
| 基金项目： | 国家自然科学基金项目，甘肃省自然科学研究基金计划项目，甘肃省高校科研基本业务费项目，西北师范大学青年教师科研能力提升计划项目 |
| 摘 要： | 利用Nd∶YAG激光器输出的1 064 nm激光进行了激光诱导击穿空气光谱实验，测量了空气等离子体的时间分辨光谱。基于局域热动力学平衡模型，建立了模拟激光诱导击穿光谱的方法。对700~900 nm波段的空气等离子体光谱进行了模拟。通过模拟结果与实验结果的比较，进一步估算出了空气中氮、氧和氩的相对含量。 |
| 关 键 词： | 激光诱导击穿光谱 光谱模拟 局域热动平衡 |
| 收稿时间： | 2013-05-05 |
Spectroscopic Study of Laser Induced Breakdown Plasma Spectroscopy in Air and Semi-Empirical Simulation |
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| SUN Dui-xiong,SU Mao-gen,DONG Chen-zhong,MA Yun-yun,YANG Feng,CAO Shi-quan.Spectroscopic Study of Laser Induced Breakdown Plasma Spectroscopy in Air and Semi-Empirical Simulation[J].Spectroscopy and Spectral Analysis,2014,34(12):3230-3234. | |
| Authors: | SUN Dui-xiong SU Mao-gen DONG Chen-zhong MA Yun-yun YANG Feng CAO Shi-quan |
| Institution: | 1. Editorial Department of Journal of Northwest Normal University, Lanzhou 730070, China2. Key Laboratory of Atomic and Molecular Physics & Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China3. College of Bailie Engineering and Technology, Lanzhou City University, Lanzhou 730070, China |
| Abstract: | A laser induced breakdown spectroscopy experiment was carried out using Nd∶YAG laser in air, and time-resolved spectra were measured. Based on local thermodynamic equilibrium assumption, a method used to simulate LIBS spectra is proposed. A LIBS spectrum of air in the wavelength range of 700~900 nm was simulated using this method. A good agreement between experiment and simulation was obtained, and moreover, the relative concentrations of the N, O and Ar in air were obtained. |
| Keywords: | Laser induced breakdown spectroscopy Spectral simulation Local thermodynamic equilibrium |
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