• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Two-Photon Absorption Laser Induced Fluorescence Measurements of Neutral Density in Helicon Plasma.
【24h】

Two-Photon Absorption Laser Induced Fluorescence Measurements of Neutral Density in Helicon Plasma.

机译：双光子吸收激光诱导的螺旋等离子体中性密度的荧光测量。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Neutral particles play a critical role in plasma experiments. They simultaneously act as a source of particles and a sink of momentum and energy. Also, they act as an intermediary between the plasma and surrounding material walls. However, few methods exist to make localized, direct neutral density measurements. A new diagnostic, based on two-photon absorption laser induced fluorescence (TALIF), capable of making direct ground state measurement is developed. A high intensity (5 MW/cm2), narrow bandwidth (0.1 cm -1) laser is used to directly probe the ground state of neutral hydrogen, deuterium and krypton. The diagnostic represents an improvement over traditional laser induced fluorescence in that it can be used to measure the spatial profile from a single porthole, and it can be operated in a Doppler-free configuration. The system is tested and calibrated in a low temperature helicon plasma source. Calculations show the system has sufficient performance to achieve an acceptable signal-to-noise ratio in a high temperature fusion plasma. Development of the diagnostic is presented in this work along with both steady-state and time-resolved TALIF measurements in helicon plasma.
机译：中性粒子在等离子体实验中起关键作用。它们同时充当粒子的来源以及动量和能量的汇入。而且，它们充当等离子体与周围材料壁之间的中介。但是，很少有方法可以进行局部直接的中性密度测量。开发了一种基于双光子吸收激光诱导荧光（TALIF）的诊断仪，该诊断仪能够直接进行基态测量。高强度（5 MW / cm2），窄带宽（0.1 cm -1）的激光用于直接探测中性氢，氘和k的基态。该诊断代表了对传统激光诱导荧光的改进，因为它可用于测量单个舷窗的空间轮廓，并且可在无多普勒配置的情况下进行操作。该系统在低温螺旋等离子体源中进行测试和校准。计算表明，该系统具有足够的性能，可以在高温聚变等离子体中达到可接受的信噪比。在这项工作中将介绍诊断技术的发展，以及在螺旋等离子体中进行稳态和时间分辨的TALIF测量。

著录项

  • 作者

    Galante, Matthew E.;

  • 作者单位

    West Virginia University.;

  • 授予单位 West Virginia University.;
  • 学科 Physics Fluid and Plasma.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 177 p.
  • 总页数 177
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号