首页> 外文会议>Frontiers in ultrafast optics: biomedical, scientific, and industrial applications XVII >Time-Resoved Correlated Measurement of Laser-Induced-Breakdown Spectroscopy and Electron Number Density: Application to High-Pressure Hydrocarbon Flames
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Time-Resoved Correlated Measurement of Laser-Induced-Breakdown Spectroscopy and Electron Number Density: Application to High-Pressure Hydrocarbon Flames

机译:激光击穿光谱和电子数密度的时间分辨相关测量:在高压烃火焰中的应用

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摘要

Application of time-resolved ultrashort-pulse-laser-based laser-induced breakdown spectroscopy (LIBS) is proposed for diagnostics in hydrocarbon flames at elevated pressures. Earlier study in nanosecond-laser-based LIBS for measuring fuel-to-air (F/A) ratios in stable hydrocarbon flame at high pressures is reported to have high measurement instabilities. A correlated measurement of time-resolved LIBS and electron number density measurement is carried out to develop an understanding of the source of the aforesaid measurement instability. The planned correlated measurements of LIBS and electron number density with short picosecond to femtosecond excitations have potentials to significantly reduce the instability in F/A ratio measurements at high pressure.
机译:提出了基于时间分辨的超短脉冲激光的激光诱导击穿光谱法(LIBS)的应用,用于诊断高压下的烃类火焰。据报道,基于纳秒激光的LIBS的早期研究具有很高的测量不稳定性,该LIBS用于测量高压下稳定烃火焰中的燃料空气比(F / A)。进行时间分辨的LIBS和电子数密度测量的相关测量,以加深对上述测量不稳定性来源的理解。短皮秒至飞秒激发的LIBS和电子数密度的计划相关测量具有显着降低高压下F / A比测量的不稳定性的潜力。

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  • 会议地点 San Francisco(US)
  • 作者单位

    Spectral Energies LLC, Dayton, OH 45431, USA,Department of Physics, Wright State University, Dayton, Ohio 45435, USA;

    Spectral Energies LLC, Dayton, OH 45431, USA;

    Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996 USA;

    Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996 USA;

    Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996 USA;

    Air Force Research Laboratory, Aerospace Systems Directorate, Wright-Patterson AFB, OH 45433, USA;

    Spectral Energies LLC, Dayton, OH 45431, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LIBS; high pressure; fuel-air ratio; ultrafast LIBS;

    机译:LIBS;高压力;空燃比;超快LIBS;

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