Self-modulated wakefield and forced laser wakefield acceleration of electrons

@article{Najmudin2003SelfmodulatedWA,
  title={Self-modulated wakefield and forced laser wakefield acceleration of electrons},
  author={Z. Najmudin and K. Krushelnick and E. Clark and S. Mangles and B. Walton and A. Dangor and S. Fritzler and V. Malka and E. Lefebvre and D. Gordon and F. Tsung and C. Joshi},
  journal={Physics of Plasmas},
  year={2003},
  volume={10},
  pages={2071-2077}
}
The interaction of intense laser pulses (power>30 TW) with underdense plasmas has been studied. In the regime where the pulse length is much longer than the plasma period (τl≫2πωp−1), the laser pulse is found to be self-modulated at the plasma frequency by the forward Raman scattering instability. Wavebreaking of the resulting plasma wave results in energetic electrons being accelerated to more than 100 MeV. Reducing the pulse length so that τl∼2πωp−1, but retaining the same power, also leads… Expand

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References

SHOWING 1-10 OF 59 REFERENCES
Electron Acceleration by a Wake Field Forced by an Intense Ultrashort Laser Pulse
TLDR
It is shown that a gain in maximum electron energy of up to 200 megaelectronvolts can be achieved, along with an improvement in the quality of the ultrashort electron beam in the forced laser wake field regime. Expand
Nonlinear interaction of intense laser pulses in plasmas.
  • Sprangle, Esarey, Ting
  • Physics, Materials Science
  • Physical review. A, Atomic, molecular, and optical physics
  • 1990
TLDR
A nonlinear 1D theory is developed which describes some important aspects of intense laser-plasma interactions and finds coherent harmonic generation using a linearly polarized laser to be most efficient for short laser pulses and can be enhanced by the presence of large amplitude plasma wakefields. Expand
Electron acceleration from the breaking of relativistic plasma waves
ELECTRONS in a plasma undergo collective wave-like oscillations near the plasma frequency. These plasma waves can have a range of wavelengths and hence a range of phase velocities1. Of particularExpand
Characterization of electron beams produced by ultrashort (30 fs) laser pulses
Detailed measurements of electron spectra and charges from the interaction of 10 Hz, 600 mJ laser pulses in the relativistic regime with a gas jet have been done over a wide range of intensitiesExpand
Investigation of a channeling high-intensity laser beam in underdense plasmas
The interaction of an intense short pulse laser (>5/spl times/10/sup 18/ Wcm/sup -2/) with underdense plasma was extensively studied. The beam is found to be highly susceptible to the forward RamanExpand
Particle acceleration in relativistic laser channels
Energy spectra of ions and fast electrons accelerated by a channeling laser pulse in near-critical plasma are studied using three-dimensional (3D) Particle-In-Cell simulations. The realistic 3DExpand
Relativistic wake-field generation by an intense laser pulse in a plasma
Abstract Generation of nonlinear plasma oscillations by an intense laser pulse is considered. It is shown that longitudinal plasma waves with relativistic amplitudes and phase velocities close to theExpand
Physics and Applications of Relativistic Plasmas Driven by Ultra-intense Lasers
As tabletop lasers continue to reach record levels of peak power, the interaction of light with matter has crossed a new threshold, in which plasma electrons at the laser focus oscillate atExpand
Generation of ultrahigh intensity laser pulses
Mainly due to the method of chirped pulse amplification, laser intensities have grown remarkably during recent years. However, the attaining of very much higher powers is limited by the materialExpand
Nonlinear depletion of ultrashort and relativistically strong laser pulses in an underdense plasma
The depletion of a relativistically strong laser pulse in the course of interaction with underdense plasmas is considered. The driving mechanisms of distortion and fast depletion of the pulse due toExpand
...
1
2
3
4
5
...