Intense-laser generated relativistic electron transport in coaxial two-layer targets

2008 ◽  
Vol 92 (7) ◽  
pp. 071502 ◽  
Author(s):  
C. T. Zhou ◽  
X. T. He ◽  
M. Y. Yu
Keyword(s):  
Electron Transport ◽  
Relativistic Electron ◽  
Intense Laser

GENERATION OF GOOD-QUALITY RELATIVISTIC ELECTRON BEAM FROM SELF-MODULATED LASER WAKEFIELD ACCELERATION

2007 ◽  
Vol 21 (03n04) ◽  
pp. 398-406 ◽  
Author(s):  
N. HAFZ ◽  
G. H. KIM ◽  
C. KIM ◽  
H. SUK
Keyword(s):  
Relativistic Electron ◽  
Energy Spread ◽  
Intense Laser ◽  
Laser Wakefield Acceleration ◽  
Nitrogen Gas ◽  
Laser Plasma Interaction ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Central Energy ◽  
A Charge

A relativistic electron bunch with a large charge (~2 nC ) was produced from a self-modulated laser wakefield acceleration configuration. In this experiment, an intense laser pulse with a peak power of 2 TW and a duration of 700 fs was focused in a nitrogen gas jet, and multi-MeV electrons were observed from the strong laser-plasma interaction. By passing the electrons through a small pinhole-like collimator of cone f/70, we observed a narrowing in the electron beam's energy spread. The beam clearly showed a small energy-spread behavior with a central energy of 4.8 MeV and a charge of 115 pC. The acceleration gradient was estimated to be about 20 GeV/m.

Relativistic electron transport and confinement within charge-insulated, mass-limited targets

2007 ◽  
Vol 3 (3-4) ◽  
pp. 358-364 ◽  
Author(s):  
Sophie D. Baton ◽  
Michel Koenig ◽  
Perceval Guillou ◽  
Bérénice Loupias ◽  
Alessandra Benuzzi-Mounaix ◽  
...  
Keyword(s):  
Electron Transport ◽  
Relativistic Electron

scholarly journals Longitudinal and transverse cooling of relativistic electron beams in intense laser pulses

2015 ◽  
Vol 17 (5) ◽  
pp. 053025 ◽  
Author(s):  
Samuel R Yoffe ◽  
Yevgen Kravets ◽  
Adam Noble ◽  
Dino A Jaroszynski
Keyword(s):  
Relativistic Electron ◽  
Electron Beams ◽  
Laser Pulses ◽  
Intense Laser ◽  
Relativistic Electron Beams ◽  
Intense Laser Pulses

scholarly journals Proton acceleration in a laser-induced relativistic electron vortex

2019 ◽  
Vol 85 (4) ◽  
Author(s):  
L. Q. Yi ◽  
I. Pusztai ◽  
A. Pukhov ◽  
B. F. Shen ◽  
T. Fülöp
Keyword(s):  
Laser Pulse ◽  
Relativistic Electron ◽  
Density Gradient ◽  
Incidence Angle ◽  
Grazing Angle ◽  
Critical Density ◽  
Intense Laser ◽  
Plasma Parameters ◽  
Analytical Estimate ◽  
Background Density

We show that when a solid plasma foil with a density gradient on the front surface is irradiated by an intense laser pulse at a grazing angle, ${\sim}80^{\circ }$ , a relativistic electron vortex is excited in the near-critical-density layer after the laser pulse depletion. The vortex structure and dynamics are studied using particle-in-cell simulations. Due to the asymmetry introduced by non-uniform background density, the vortex drifts at a constant velocity, typically $0.2{-}0.3$ times the speed of light. The strong magnetic field inside the vortex leads to significant charge separation; in the corresponding electric field initially stationary protons can be captured and accelerated to twice the velocity of the vortex (100–200 MeV). A representative scenario – with laser intensity of $10^{21}~\text{W}~\text{cm}^{-2}$ – is discussed: two-dimensional simulations suggest that a quasi-monoenergetic proton beam can be obtained with a mean energy 140 MeV and an energy spread of ${\sim}10\,\%$ . We derive an analytical estimate for the vortex velocity in terms of laser and plasma parameters, demonstrating that the maximum proton energy can be controlled by the incidence angle of the laser and the plasma density gradient.

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