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Helicon plasma in a magnetic shuttle

文献类型：期刊论文

作者Chang, L.1,2; Liu, J.3,4; Yuan, X. G.1,2; Yang, X.1; Zhou, H. S.1,2; Luo, G. N.1,2; Zhang, X. J.1,2; Peng, Y. K.1; Dai, J.3,4; Hang, G. R.3,4
刊名AIP ADVANCES
出版日期2020-10-01
卷号10
DOI10.1063/5.0013803
通讯作者Zhou, H. S.(haishanzhou@ipp.ac.cn)
英文摘要The definition of a magnetic shuttle is introduced to describe the magnetic space enclosed by two magnetic mirrors with the same field direction and high mirror ratio. Helicon plasma immersed in such a magnetic shuttle (mirror ratio 5) that can provide the confinement of charged particles is modeled using an electromagnetic solver. The perpendicular structure of the wave field along this shuttle is given in terms of stream vector plots, showing a significant change from midplane to ending throats, and the vector field rotates and forms a circular layer that separates the plasma column radially into core and edge regions near the throats. The influences of the driving frequency (f = 6.78 MHz-40.68 MHz), plasma density (n(emax) = 10(16) m(-3) to 10(19) m(-3)), and field strength (B-0max = 0.017 T-1.7 T) on the wave field structure and power absorption are computed in detail. It is found that the wave energy and power absorption decrease for increased driving frequency and reduced field strength and increase significantly when the plasma density is above a certain value. The axial standing-wave feature always exists, due to the interference between forward and reflected waves from ending magnetic mirrors. Distributions of wave energy density and power absorption density all show a shrinking feature from midplane to ending throats, which is consistent with the nature of the helicon mode that propagates along field lines. Theoretical analysis based on a simple magnetic shuttle and the governing equation of helicon waves shows consistency with computed results and previous studies. This hypothetical work is a valuable to guide the helicon physics prototype experiment, which is designed for the fundamental wave-particle interaction study in helicon plasma, to achieve high plasma density and energy absorption efficiency.
WOS关键词PROPAGATION ; PHYSICS
资助项目Shanghai Engineering Research Center of Space Engine[17DZ2280800] ; Chinese Academy of Sciences 100 Talent Program (B) ; Users with Excellence Project of Hefei Science Center CAS[2018HSC-UE006]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者AMER INST PHYSICS
WOS记录号WOS:000578412100003
资助机构Shanghai Engineering Research Center of Space Engine ; Chinese Academy of Sciences 100 Talent Program (B) ; Users with Excellence Project of Hefei Science Center CAS
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/104594]  
专题中国科学院合肥物质科学研究院
通讯作者Zhou, H. S.
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Grad Isl Sci, Hefei 230026, Peoples R China
3.Shanghai Inst Space Prop, Shanghai 201112, Peoples R China
4.Shanghai Engn Res Ctr Space Engine, Shanghai 201112, Peoples R China
推荐引用方式
GB/T 7714		 Chang, L.,Liu, J.,Yuan, X. G.,et al. Helicon plasma in a magnetic shuttle[J]. AIP ADVANCES,2020,10.
APA Chang, L..,Liu, J..,Yuan, X. G..,Yang, X..,Zhou, H. S..,...&Hang, G. R..(2020).Helicon plasma in a magnetic shuttle.AIP ADVANCES,10.
MLA Chang, L.,et al."Helicon plasma in a magnetic shuttle".AIP ADVANCES 10(2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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