| 基于激光诱导击穿光谱技术的水垢成分分析 |
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| 引用本文： | 王玉琴,宋小荣,罗文峰,赵小侠.基于激光诱导击穿光谱技术的水垢成分分析[J].郑州大学学报(自然科学版),2013(4):63-67. |
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| 作者姓名： | 王玉琴 宋小荣 罗文峰 赵小侠 |
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| 作者单位： | [1]郑州大学教育技术中心,河南郑州450001 [2]西安邮电大学电子工程学院,陕西西安710121 [3]西安文理学院物理与机械电子工程学院,陕西西安710065 |
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| 基金项目： | 陕西省教育厅科研计划项目,编号2013JK0620;西安市科技计划项目,编号CX12189WL02. |
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| 摘 要： | 将1064nm激光聚焦到水垢上产生等离子体，通过分析水垢等离子体光谱，定性地证认元素钙和镁．通过10条钙原子谱线的Bohzmann图，计算得到水垢等离子体的电子温度是4793K．通过测量镁原子谱线285．21nm的Stark展宽，求得水垢等离子体的电子密度是6．1×1018cm-1．实验结果表明，激光诱导产生的水垢等离子体满足局部热力学平衡模型，并处于光学薄状态，等离子体的频率是2．2×1013Hz，韧制吸收系数为8．87cm-1．
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| 关 键 词： | 激光诱导击穿光谱 原子发射光谱 等离子体 水垢 |
The Composition Analysis of Water Scale Using LIBS |
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| WANG Yu-qinl,SONG Xiao-rong,LUO Wen-feng,ZHAO Xiao-xia.The Composition Analysis of Water Scale Using LIBS[J].Journal of Zhengzhou University (Natural Science),2013(4):63-67. |
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| Authors: | WANG Yu-qinl SONG Xiao-rong LUO Wen-feng ZHAO Xiao-xia |
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| Institution: | 3 ( 1. Education Technology Center, Zhengzhou University, Zhengzhou 450001, China ; 2. School of Electronic Engineering, Xi ＇ an University of Posts ＆ Telecommunications, Xi ＇ an 710121, China ; 3. School of Physics and Mechanical ＆ Electronic Engineering, Xi＇an University of Arts and Science, Xi＇an 710065, China) |
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| Abstract: | The water scale plasma was produced by focusing the 1 064 nm laser onto the water scale. El- ements Ca, Mg were identified by the analysis of the plasma spectra. The plasma temperature 4 793 K was inferred using the Bohzmann plot method with ten neutral calcium lines, while the electron density 6.1 × 1018TM cm-3 was obtained from the Stark broadening of the profile of Mg I 285.21 nm. Based on ex- perimental results, the laser-induced water scale plasma was verified to be in local thermodynamic equi- librium and free from self-absorption. At the same time, the plasma frequency of 2.2 × 1013 Hz and the inverse bremsstrahlung absorption eoefficieney of 8.87 cm -1 were obtained. |
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| Keywords: | LIBS atomic emission spectroscopy plasma water scale |
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