摘要
针对螺旋波等离子体放电机理,开展了多种工质条件下的螺旋波放电等离子体内波场结构数值模拟研究。计算发现:氦气等离子体的Er分量在径向边界处的峰值更为突出,有利于等离子体在径向的输运,波电场径向分量决定了电流密度径向分量在内部的表现。在0.266 Pa和1.064 Pa两种气体压强条件下,通过波场结构验证了气压对于波阻尼影响的结论。波场结构是螺旋波在等离子体内传播以及能量沉积的微观体现,研究螺旋波波场结构是揭示其高电离效率的重要途径。初步探索了功率耦合机制,为实验系统优化及实验方案设定奠定理论基础。
Aiming at the mechanism of helicon wave plasma discharge,a numerical simulation study of the internal wave field structure of the helicon wave discharge plasma under various working gas conditions is carried out. It can be found in the calculation that the peak of the Ercomponent of the helium plasma at the radial boundary is more prominent,which is beneficial to the transport of the plasma in the radial direction. The radial component of the wave electric field determines the internal performance of the radial component of the current density. Under the two gas pressure conditions of 0.266 Pa and 1.064 Pa,the conclusion of the influence of air pressure on wave damping was verified by the wave field structure. The wave field structure is the micro-representation of the propagation of the helicon wave in the plasma and the energy deposition. It is an important way to reveal its high ionization efficiency by studying the structure of the helicon wave field. The power coupling mechanism is initially explored,which is a theoretical foundation for the optimization of the experimental system and the setting of the experimental scheme.
作者
谢平
段朋振
李益文
翟旭升
XIE Ping;DUAN Pengzhen;LI Yiwen;ZHAI Xusheng(Aviation Maintenance NCO School,Air Force Engineering University,Xinyang 464000,Henan,China;Science and Technology on Plasma Dynamics Laboratory,Air Force Engineering University,Xi'an 710038,Shaanxi,China)
出处
《上海航天（中英文）》
CSCD
2020年第6期45-51,共7页
Aerospace Shanghai（Chinese&English）
基金
国家自然科学基金(51776222,61627901)。
关键词
螺旋波等离子体
波场结构
工质气体
压强
数值模拟
helicon wave plasma
wave field structure
working gas
pressure
numerical simulation
