首页|激光诱导钛合金等离子体电子温度和电子密度的时间分辨测量

激光诱导钛合金等离子体电子温度和电子密度的时间分辨测量

扫码查看
原文链接
  • 万方数据
  • 维普
以波长为 532 nm的纳秒脉冲激光器为激发源,使用中阶梯光栅光谱仪和增强电荷耦合器件(ICCD)获得了激光诱导钛合金等离子体的时间分辨发射光谱;基于发射光谱,利用玻尔兹曼图法和萨哈-玻尔兹曼图法计算了等离子体电子温度;采用斯塔克展宽法计算了电子密度.研究结果表明,相较于玻尔兹曼图法,萨哈-玻尔兹曼图法可提供更为准确的电子温度计算结果.此外,光谱采集门宽的增大会导致等离子体电子温度和电子密度计算值的减小.以上研究结果为钛合金的激光诱导击穿光谱(LIBS)分析提供了实验指导.
Time-Resolved Measurements of Electron Temperature and Electron Density in Laser-Induced Titanium Alloy Plasma
The time-resolved emission spectra of laser-induced titanium alloy plasma was obtained using a mid-level echelle spectrometer nanosecond and an intensified charge-coupled device(ICCD),with a 532 nm nanosecond pulse laser as the excitation source.The electron temperature of the plasma was calculated using the Boltzmann plot method and the Saha-Boltzmann plot based on the emission spectra,and the electron density was determined by the Stark broadening method.The results show that the Saha-Boltzmann plot could provide more accurate calculations of the electron temperature compared to the Boltzmann plot.Additionally,an increase of the spectral gate width would lead to a decrease in the calculated values of electron temperature and electron density.The results provide experimental guidance for laser-induced breakdown spectroscopy(LIBS)analysis of titanium alloys.

titanium alloylaser-induced plasmaelectron temperatureelectron densitytime-resolved measurementslaser-induced breakdown spectroscopy

胡桢麟、高阳、林楠、郭连波

展开 >

中国科学院 上海光学精密机械研究所,上海 201800

华东理工大学 机械与动力工程学院,上海 200237

华中科技大学武汉光电国家研究中心,湖北武汉 430074

钛合金 激光诱导等离子体 电子温度 电子密度 时间分辨测量 激光诱导击穿光谱

国家自然科学基金中国博士后科学基金面上项目(第七十四批)国家资助博士后研究人员计划

623751012023M743643GZB20230791

2024

宁夏工程技术
宁夏大学

宁夏工程技术

影响因子：0.185
ISSN：1671-7244
年,卷(期)：2024.23(1)
  • 16