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arXiv physics/0008092physics.plasm-phphysics.atom-ph
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介质表面放电等离子体源的光谱研究

Spectroscopic investigations of a dielectric-surface-discharge plasma source

R. Arad, K. Tsigutkin, Yu. V. Ralchenko, Y. Maron

摘要:

本文对脉冲等离子体实验中常用的插板等离子体源产生的等离子体的性质进行了光谱学研究。等离子体用于预填充平面0.4 ms传导时间等离子体断开开关(POS)。一种新的气体掺杂技术和二次表面闪络等离子体源被用来局部掺杂的等离子体与气体和固体材料,分别允许空间分辨的测量。电子密度、温度和等离子体成分由谱线强度和谱线轮廓确定。详细的碰撞辐射模型被用来分析所观察到的线强度。各种离子的传播速度和发散角分别由飞行时间测量和谱线的多普勒展宽确定。这允许区分从POS电极喷射的二次等离子体与闪光板源的等离子体。

英文摘要:

Spectroscopic investigations of the properties of a plasma produced by a flashboard plasma source, commonly used in pulsed plasma experiments, are presented. The plasma is used to prefill a planar 0.4-ms-conduction time plasma opening switch (POS). A novel gas-doping technique and a secondary surface flashover plasma source are used to locally dope the plasma with gaseous and solid materials, respectively, allowing for spatially-resolved measurements. The electron density, temperature, and plasma composition are determined from spectral line intensities and line profiles. Detailed collisional-radiative modeling is used to analyze the observed line intensities. The propagation velocity and divergence angle of various ions are determined from time-of-flight measurements and Doppler broadening of spectral lines, respectively. This allows for distinguishing the secondary plasma ejected from the POS electrodes from the plasma of the flashboard source.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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