Identifying the source of super-high energetic electrons in the presence of pre-plasma in laser-matter interaction at relativistic intensities

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 强场激光物理国家重点实验室

	Identifying the source of super-high energetic electrons in the presence of pre-plasma in laser-matter interaction at relativistic intensities
	Luan, S. X.; Wu, D.; Krasheninnikov, S. I.; Yu, W.
刊名	Nucl. Fusion
	2017
卷号	57 期号:1
通讯作者	wudong@siom.ac.cn ; skrash@mae.ucsd.edu
英文摘要	The generation of super-high energetic electrons influenced by pre-plasma in relativistic intensity laser-matter interaction is studied in a one-dimensional slab approximation with particle-in-cell simulations. Different pre-plasma scale lengths and laser intensities are considered, showing an increase in both particle number and cut-off kinetic energy of electrons with the increase of pre-plasma scale length and laser intensity, the cut-off kinetic energy greatly exceeding the corresponding laser ponderomotive energy. A two-stage electron acceleration model is proposed to explain the underlying physics. The first stage is attributed to the synergetic acceleration by longitudinal electric field and counter-propagating laser pulses, and a scaling law is obtained with efficiency depending on the pre-plasma scale length and laser intensity. These electrons pre-accelerated in the first stage could build up an intense electrostatic potential barrier with maximal value several times as large as the initial electron kinetic energy. Some of the energetic electrons could be further accelerated by reflection off the electrostatic potential barrier, with their finial kinetic energies significantly higher than the values pre-accelerated in the first stage.
收录类别	SCI
资助信息	National Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858]
WOS记录号	WOS:000385638600003
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/28642]
专题	上海光学精密机械研究所_强场激光物理国家重点实验室
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Luan, S. X.,Wu, D.,Krasheninnikov, S. I.,et al. Identifying the source of super-high energetic electrons in the presence of pre-plasma in laser-matter interaction at relativistic intensities[J]. Nucl. Fusion,2017,57(1).
APA	Luan, S. X.,Wu, D.,Krasheninnikov, S. I.,&Yu, W..(2017).Identifying the source of super-high energetic electrons in the presence of pre-plasma in laser-matter interaction at relativistic intensities.Nucl. Fusion,57(1).
MLA	Luan, S. X.,et al."Identifying the source of super-high energetic electrons in the presence of pre-plasma in laser-matter interaction at relativistic intensities".Nucl. Fusion 57.1(2017).