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Shadow photometric method for measurements of electron density in erosion plasma

机译:阴影光度法测量腐蚀等离子体中的电子密度

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摘要

The purpose of this work is property investigation of quasi-stationary plasma formations with high energy content for practical applications in high thermal physics and diagnostic of materials under extreme conditions. Investigated plasma formations are the result of two plasma counter-flows interaction process which is based on high-current discharges of plasma accelerators of erosion type in vacuum. Shadowgraphs of colliding plasma flows were made using knife and slit method. As a light source a specially made argon flash lamp was used. Averaged electron concentration in the interaction area was calculated from intensity distribution of shadowgraphs. In order to perform a correct shadow display a light filter system with transmission peak at 547 nm was mounted in front of the CCD-camera. At this wavelength the relative intensity in plasma spectrum was low while in argon lamp spectrum it was near-maximum.
机译:这项工作的目的是研究具有高能量含量的准平稳等离子体地层,以便在高热物理中实际应用并在极端条件下诊断材料。研究的等离子体形成是两个等离子体逆流相互作用过程的结果,该过程基于真空中侵蚀型等离子体加速器的大电流放电。碰撞的等离子体流的阴影图是使用刀和狭缝方法制作的。作为光源,使用了特制的氩闪光灯。根据阴影图的强度分布计算相互作用区域中的平均电子浓度。为了执行正确的阴影显示,在CCD相机的前面安装了一个透射率为547 nm的滤光器系统。在此波长下,等离子体光谱的相对强度较低,而在氩灯光谱中的相对强度则接近最大。

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  • 作者单位

    Space Research Institute, King Abdulaziz City for Science and Technology, Saudi Arabia;

    A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovka str., Minsk 220072, Belarus;

    A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovka str., Minsk 220072, Belarus;

    A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovka str., Minsk 220072, Belarus;

    A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovka str., Minsk 220072, Belarus;

    A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovka str., Minsk 220072, Belarus;

    A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, 15 P. Brovka str., Minsk 220072, Belarus;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    plasma; accelerator; discharge; shadow method;

    机译:等离子体;加速器;排出;阴影法;

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