A New Toroidal Capacitive Discharge Plasma Vessel Design and Implementation for Plasma Studies

IF 1.5 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
E. Kurt, B. Dursun, K. Çelik
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Abstract

A new toroidal capacitive discharge plasma (TCDP) system is designed and constructed for the first time to our knowledge. This device has been created for the exploration of plasma-material interactions including metal and semiconductor samples for different pressure rates. By using two materials, namely copper (Cu) and tungsten (W), initially, electrode couples have been tested for high-voltage DC excitations. The reactions of electron material to the low-pressure helium (He) have been observed. Then, Paschen’s curve exploration has been performed to find out the gas discharge threshold electrical potentials for various pressure (P) rates. The simulations of TCDP device have been performed in a particle in cell (PIC) analyzed 3D structure in the CST Studio medium for various excitation frequencies and toroidal/poloidal field values. It is observed that the breakdown voltage for He is UB = 500 V. The DC excitation via the electrodes reveals that the torus-structured plasma gas media produces a stable torus-shaped media for plasma formation. Besides, toroidal and poloidal fields affect the plasma stabilization in the TCDP. Especially toroidal field coils in TCDP assist in keeping the plasma in the middle of the torus channel. According to the experiments, the poloidal fields increase the electric field strength in the angular direction and improve the electrical stability of the plasma between the electrodes.

Abstract Image

一种用于等离子体研究的新型环形电容放电等离子体容器的设计与实现
本文首次设计并构建了环形电容放电等离子体(TCDP)系统。该装置用于探索等离子体与材料的相互作用,包括不同压力速率下的金属和半导体样品。首先,通过使用铜(Cu)和钨(W)两种材料,对电极偶进行了高压直流激励测试。观察了电子材料与低压氦(He)的反应。然后进行Paschen曲线勘探,找出不同压力(P)率下的气体放电阈值电势。在CST Studio介质中,在不同激励频率和环向/极向场值下,对TCDP器件在粒子池(PIC)三维结构中进行了模拟。观察到He的击穿电压为UB = 500 V。通过电极的直流电激励表明,环形结构的等离子体气体介质为等离子体形成提供了稳定的环形介质。此外,环向和极向磁场影响等离子体在TCDP中的稳定性。特别是在TCDP环面磁场线圈有助于保持等离子体在环面通道的中间。实验结果表明,极向场增加了电极间等离子体的角方向电场强度,提高了电极间等离子体的电稳定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Brazilian Journal of Physics
Brazilian Journal of Physics 物理-物理:综合
CiteScore
2.50
自引率
6.20%
发文量
189
审稿时长
6.0 months
期刊介绍: The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.
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