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Identifying the source of super-high energetic electrons in the presence of pre-plasma in laser-matter interaction at relativistic intensities
Wu, D.; Krasheninnikov, S. I.; Luan, S. X.; Yu, W.; wudong@siom.ac.cn; skrash@mae.ucsd.edu
2017
Source PublicationNucl. Fusion
Volume57Issue:1
AbstractThe 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.
SubtypeArticle
Department强光
DOI10.1088/0029-5515/57/1/016007
Funding OrganizationNational Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858] ; National Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858] ; National Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858] ; National Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858]
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858] ; National Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858] ; National Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858] ; National Natural Science Foundation of China [11304331, 11174303, 61221064]; National Basic Research Program of China [2013CBA01504, 2011CB808104]; USDOE at UCSD [DENA0001858]
WOS IDWOS:000385638600003
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.siom.ac.cn/handle/181231/28642
Collection强场激光物理国家重点实验室
Corresponding Authorwudong@siom.ac.cn; skrash@mae.ucsd.edu
Affiliation中国科学院上海光学精密机械研究所
Recommended Citation
GB/T 7714
Wu, D.,Krasheninnikov, S. I.,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[J]. Nucl. Fusion,2017,57(1).
APA Wu, D.,Krasheninnikov, S. I.,Luan, S. X.,Yu, W.,wudong@siom.ac.cn,&skrash@mae.ucsd.edu.(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 Wu, D.,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).
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