Effects of the imposed magnetic field on the production and transport of   relativistic electron beams

doi:10.1063/1.4812631

CORC > 北京大学 > 工学院

	Effects of the imposed magnetic field on the production and transport of relativistic electron beams
	Cai, Hong-bo ; Zhu, Shao-ping ; He, X. T.
刊名	等离子体物理学
	2013
关键词	LASER FUSION IGNITION PLASMAS MECHANISM DRIVEN TARGET
DOI	10.1063/1.4812631
英文摘要	The effects of the imposed uniform magnetic field, ranging from 1 MG up to 50 MG, on the production and transport of relativistic electron beams (REBs) in overdense plasmas irradiated by ultraintense laser pulse are investigated with two-dimensional particle-in-cell numerical simulations. This study gives clear evidence that the imposed magnetic field is capable of effectively confining the relativistic electrons in space even when the source is highly divergent since it forces the electrons moving helically. In comparison, the spontaneous magnetic fields, generated by the helically moving electrons interplaying with the current filamentation instability, are dominant in scattering the relativistic electrons. As the imposed magnetic field was increased from 1 MG to 50 MG, overall coupling from laser to the relativistic electrons which have the potential to heat the compressed core in fast ignition was found to increase from 6.9% to 21.3% while the divergence of the REB increases significantly from 64 degrees to 90 degrees. The simulations show that imposed magnetic field of the value of 3-30MG could be more suitable to fast-ignition inertial fusion. (C) 2013 AIP Publishing LLC.; Physics, Fluids & Plasmas; SCI(E); EI; 4; ARTICLE; 7; 20
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/222244]
专题	工学院
推荐引用方式 GB/T 7714	Cai, Hong-bo,Zhu, Shao-ping,He, X. T.. Effects of the imposed magnetic field on the production and transport of relativistic electron beams[J]. 等离子体物理学,2013.
APA	Cai, Hong-bo,Zhu, Shao-ping,&He, X. T..(2013).Effects of the imposed magnetic field on the production and transport of relativistic electron beams.等离子体物理学.
MLA	Cai, Hong-bo,et al."Effects of the imposed magnetic field on the production and transport of relativistic electron beams".等离子体物理学 (2013).