Effects of magnetic field on electron power absorption in helicon fluid simulation

被引：8
作者：
Wu, Mingyang [1 ]
Xiao, Chijie [1 ]
Liu, Yue [2 ]
Yang, Xiaoyi [1 ]
Wang, Xiaogang [1 ,3 ]
Tan, Chang [4 ,5 ]
Sun, Qi [1 ,6 ]
机构：
[1] Peking Univ, Fus Simulat Ctr, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
[2] Dalian Univ Technol, Sch Phys, Key Lab Mat Modificat Laser Ion & Electron Beams, Minist Educ, Dalian 116024, Peoples R China
[3] Harbin Inst Technol, Harbin 150001, Peoples R China
[4] Shaanxi Key Lab Plasma Phys & Appl Technol, Xian 710100, Peoples R China
[5] Xian Aerosp Prop Inst, Xian 710100, Peoples R China
[6] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2021年 / 23卷 / 08期
基金：
中国国家自然科学基金;
关键词：
helicon plasma; discharge process; numerical simulation; EXCITATION; PROFILE; WAVES;
D O I：
10.1088/2058-6272/ac0718
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
In this study, a code, named Peking University Helicon Discharge (PHD), which can simulate helicon discharge processes under both a background magnetic field greater than 500 G and a pressure less than 1 Pa, is developed. In the code, two fluid equations are used. The PHD simulations led to two important findings: (1) the temporal evolution of plasma density with the background magnetic field exhibits a second rapid increase (termed as the second density jump), similar to the transition of modes in helicon plasmas; (2) in the presence of a magnetic field, the peak positions of electron power absorption appeared near the central axis, unlike in the case of no magnetic field. These results may lead to an enhanced understanding of the discharge mechanism.
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收藏
页数：9
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