Refluxed electrons direct laser acceleration in ultrahigh laser and relativistic critical density plasma interaction

2015 ◽  
Vol 22 (1) ◽  
pp. 013106 ◽  
Author(s):  
J. Wang ◽  
Z. Q. Zhao ◽  
B. Zhu ◽  
Z. M. Zhang ◽  
L. H. Cao ◽  
...  
Keyword(s):  
Critical Density ◽  
Plasma Interaction ◽  
Direct Laser ◽  
Laser Acceleration ◽  
Density Plasma

scholarly journals Laser reflection as a catalyst for direct laser acceleration in multipicosecond laser-plasma interaction

2020 ◽  
Vol 27 (1) ◽  
pp. 013106 ◽  
Author(s):  
K. Weichman ◽  
A. P. L. Robinson ◽  
F. N. Beg ◽  
A. V. Arefiev
Keyword(s):  
Laser Plasma ◽  
Plasma Interaction ◽  
Laser Plasma Interaction ◽  
Direct Laser ◽  
Laser Acceleration

Multi-MeV Electron Beam Generation by Direct Laser Acceleration in High-Density Plasma Channels

1999 ◽  
Vol 83 (23) ◽  
pp. 4772-4775 ◽  
Author(s):  
C. Gahn ◽  
G. D. Tsakiris ◽  
A. Pukhov ◽  
J. Meyer-ter-Vehn ◽  
G. Pretzler ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Density ◽  
Electron Beam Generation ◽  
Beam Generation ◽  
Plasma Channels ◽  
Direct Laser ◽  
Laser Acceleration ◽  
Density Plasma

scholarly journals Enhanced laser ion acceleration with a multi-layer foam target assembly

2014 ◽  
Vol 32 (4) ◽  
pp. 509-515 ◽  
Author(s):  
E. Yazdani ◽  
R. Sadighi-Bonabi ◽  
H. Afarideh ◽  
J. Yazdanpanah ◽  
H. Hora
Keyword(s):  
Proton Energy ◽  
Critical Density ◽  
Maximum Energy ◽  
Longitudinal Momentum ◽  
Free Electrons ◽  
Particle In Cell ◽  
Direct Laser ◽  
Linearly Polarized ◽  
Cell Simulation ◽  
Laser Acceleration

AbstractInteraction of a linearly polarized Gaussian laser pulse (at relativistic intensity of 2.0 × 1020 Wcm−2) with a multi-layer foam (as a near critical density target) attached to a solid layer is investigated by using two-dimensional particle-in-cell simulation. It is found that electrons with longitudinal momentum exceeding the free electrons limit of meca02/2 so-called super-hot electrons can be produced when the direct laser acceleration regime is fulfilled and benefited from self-focusing inside of the subcritical plasma. These electrons penetrate easily through the target and can enhance greatly the sheath field at the rear, resulting in a significant increase in the maximum energy of protons in target normal sheath acceleration regime. The results indicate that the maximum proton energy is enhanced by 2.7 times via using an assembled target arrangement compared to a bare solid target. Furthermore, by demonstration of this assembly, the maximum proton energy is improved beyond the optimum amount achieved by a two-layer target proposed by Sgattoni et al. (2012).

scholarly journals Ultrahigh-charge electron beams from laser-irradiated solid surface

2018 ◽  
Vol 115 (27) ◽  
pp. 6980-6985 ◽  
Author(s):  
Yong Ma ◽  
Jiarui Zhao ◽  
Yifei Li ◽  
Dazhang Li ◽  
Liming Chen ◽  
...  
Keyword(s):  
Large Scale ◽  
Electron Beams ◽  
Critical Density ◽  
Dense Matter ◽  
Grazing Incidence ◽  
High Charge ◽  
Particle In Cell ◽  
Promising Tool ◽  
Direct Laser ◽  
Laser Acceleration

Compact acceleration of a tightly collimated relativistic electron beam with high charge from a laser–plasma interaction has many unique applications. However, currently the well-known schemes, including laser wakefield acceleration from gases and vacuum laser acceleration from solids, often produce electron beams either with low charge or with large divergence angles. In this work, we report the generation of highly collimated electron beams with a divergence angle of a few degrees, nonthermal spectra peaked at the megaelectronvolt level, and extremely high charge (∼100 nC) via a powerful subpicosecond laser pulse interacting with a solid target in grazing incidence. Particle-in-cell simulations illustrate a direct laser acceleration scenario, in which the self-filamentation is triggered in a large-scale near–critical-density plasma and electron bunches are accelerated periodically and collimated by the ultraintense electromagnetic field. The energy density of such electron beams in high-Z materials reaches to ∼1012 J/m3, making it a promising tool to drive warm or even hot dense matter states.

scholarly journals Near-microcoulomb multi-MeV electrons generation in laser-driven self-formed plasma channel

2017 ◽  
Vol 35 (3) ◽  
pp. 476-482 ◽  
Author(s):  
Y. Yang ◽  
J. Jiao ◽  
C. Tian ◽  
Y. Wu ◽  
K. Dong ◽  
...  
Keyword(s):  
Short Pulse ◽  
Three Dimensional ◽  
Critical Density ◽  
Energy Coupling ◽  
High Energy ◽  
Ultra High Energy ◽  
Particle In Cell ◽  
Direct Laser ◽  
Laser Acceleration ◽  
Short Pulse Lasers

AbstractThe origin and characteristics of near-microcoulomb multi-MeV electrons accelerated by short pulse lasers interacting with near-critical density plasma in self-formed channels are studied using three-dimensional particle-in-cell simulations. According to the analysis on interaction phenomena and electron dynamics, the dominant mechanism turns out to be direct laser acceleration, which ensures the outstanding energy coupling. Additionally, self-channeling is found to be a decisive factor for the acceleration performance, as electrons obtain ultra-high energy through betatron resonance inside the channels. In our findings, by using a relativistic short laser pulse and near-critical plasma, a large amount of energetic electrons can be generated, presenting a promising and accessible route to ultraintense, high-spatial-resolution radiation pulses.

Slowdown mechanisms of ultraintense laser propagation in critical density plasma

2015 ◽  
Vol 92 (1) ◽  
Author(s):  
T. Iwawaki ◽  
H. Habara ◽  
T. Yabuuchi ◽  
M. Hata ◽  
H. Sakagami ◽  
...  
Keyword(s):  
Critical Density ◽  
Laser Propagation ◽  
Density Plasma

scholarly journals Fabrication and Characterization of Woodpile Structures for Direct Laser Acceleration

2010 ◽  
Author(s):  
C. McGuinness ◽  
E. Colby ◽  
B. Cowan ◽  
R. J. England ◽  
J. Ng ◽  
...  
Keyword(s):  
Direct Laser ◽  
Laser Acceleration ◽  
Fabrication And Characterization

Design, fabrication, and testing of a fused-silica dual-layer grating structure for direct laser acceleration of electrons

2013 ◽  
Author(s):  
E. A. Peralta ◽  
E. Colby ◽  
R. J. England ◽  
C. McGuinness ◽  
B. Montazeri ◽  
...  
Keyword(s):  
Fused Silica ◽  
Grating Structure ◽  
Direct Laser ◽  
Laser Acceleration
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