Helicon plasma in a magnetic shuttle

doi:10.1063/5.0013803

HFCAS OpenIR

	Helicon plasma in a magnetic shuttle
	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
	2020-10-01
发表期刊	AIP ADVANCES
通讯作者	Zhou, H. S.(haishanzhou@ipp.ac.cn)
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.
DOI	10.1063/5.0013803
关键词[WOS]	PROPAGATION ; PHYSICS
收录类别	SCI
语种	英语
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]
项目资助者	Shanghai Engineering Research Center of Space Engine ; Chinese Academy of Sciences 100 Talent Program (B) ; Users with Excellence Project of Hefei Science Center CAS
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000578412100003
出版者	AMER INST PHYSICS
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/104595
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
第一作者单位	中科院等离子体物理研究所
通讯作者单位	中科院等离子体物理研究所
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).