Three-dimensional simulations of RF wave propagation and power coupling in cold magnetized plasma near an ICRF antenna  

作　　者：Lei-Yu Zhang Yi-Xuan Li Quan-Zhi Zhang 张雷宇;李屹轩;张权治

机构地区：[1]School of Physics,Dalian University of Technology,Dalian 116024,China

出　　处：《Chinese Physics B》2025年第2期352-360,共9页中国物理B(英文版)

基　　金：Project supported by the National MCF Energy Research and Development Program(Grant No.2022YFE03190100);the National Natural Science Foundation of China(Grant Nos.12422513,12105035,and U21A20438);the Xiaomi Young Talents Program。

摘　　要：The electromagnetic wave propagations and their coupling characteristics in magnetized plasma near the antenna of ion cyclotron range of frequencies(ICRF)is studied based on self-developed 3DFEM-IA code.This code effectively resolves the three-dimensional(3D)geometry and the electromagnetic field using the finite element method.Our findings reveal that the distributions of electromagnetic fields and energy flow density significantly depend on the antenna phases,surface current density on the antenna straps,and background plasma density.Notably,the non-uniform surface current density on the antenna straps,resulting from the presence of induced currents,contributes to a reduction in coupling power within the edge plasma.Furthermore,the calculated coupling impedance increases with plasma density,corroborating well with experimental measurements.

关 键 词：magnetized plasma antenna of ion cyclotron range of frequencies(ICRF) power coupling 

分 类 号：TN9[电子电信—信息与通信工程]