Double-ring structure formation of intense ion beams with finite radius in a pre-formed plasma

doi:10.1063/1.5004228

	Double-ring structure formation of intense ion beams with finite radius in a pre-formed plasma
	Hu, Zhang-Hu 2; Zhao, Yong-Tao1,3 ; Wang, Xiao-Juan 2; Wang, You-Nian 2
刊名	PHYSICS OF PLASMAS
	2017-12-01
卷号	24 页码:7
ISSN号	1070-664X
DOI	10.1063/1.5004228
英文摘要	The dynamic structure evolution of intense ion beams with a large edge density gradient is investigated in detail with an analytical model and two-dimensional particle-in-cell (PIC) simulations, with special attention paid to the influence of beam radius. At the initial stage of beam-plasma interactions, the ring structure is formed due to the transverse focusing magnetic field induced by the unneutralized beam current in the beam edge region. As the beam-plasma system evolves self-consistently, a second ring structure appears in the case of ion beams with a radius much larger than the plasma skin depth, due to the polarity change in the transverse magnetic field in the central regions compared with the outer, focusing field. Influences of the current-filamentation and two-stream instability on the ring structure can be clearly observed in PIC simulations by constructing two different simulation planes. Published by AIP Publishing.
资助项目	National Natural Science Foundation of China[U1532263] ; National Natural Science Foundation of China[11775042] ; National Natural Science Foundation of China[11375034] ; Science Challenge Project[TZ2016005]
WOS关键词	RELATIVISTIC ELECTRON-BEAMS ; BACKGROUND PLASMA ; PROPAGATION ; NEUTRALIZATION ; INSTABILITIES ; LENS
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000418957200056
资助机构	National Natural Science Foundation of China ; Science Challenge Project
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/46103]
专题	近代物理研究所_实验物理中心
通讯作者	Hu, Zhang-Hu
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China 3.Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Hu, Zhang-Hu,Zhao, Yong-Tao,Wang, Xiao-Juan,et al. Double-ring structure formation of intense ion beams with finite radius in a pre-formed plasma[J]. PHYSICS OF PLASMAS,2017,24:7.
APA	Hu, Zhang-Hu,Zhao, Yong-Tao,Wang, Xiao-Juan,&Wang, You-Nian.(2017).Double-ring structure formation of intense ion beams with finite radius in a pre-formed plasma.PHYSICS OF PLASMAS,24,7.
MLA	Hu, Zhang-Hu,et al."Double-ring structure formation of intense ion beams with finite radius in a pre-formed plasma".PHYSICS OF PLASMAS 24(2017):7.