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Träfflista för sökning "WFRF:(Cros B.) srt2:(2005-2009)"

Search: WFRF:(Cros B.) > (2005-2009)

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1.
  • Mangles, S. P. D., et al. (author)
  • Controlling the spectrum of x-rays generated in a laser-plasma accelerator by tailoring the laser wavefront
  • 2009
  • In: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 95:18
  • Journal article (peer-reviewed)abstract
    • By tailoring the wavefront of the laser pulse used in a laser-wakefield accelerator, we show that the properties of the x-rays produced due to the electron beam's betatron oscillations in the plasma can be controlled. By creating a wavefront with coma, we find that the critical energy of the synchrotronlike x-ray spectrum can be significantly increased. The coma does not substantially change the energy of the electron beam, but does increase its divergence and produces an energy-dependent exit angle, indicating that changes in the x-ray spectrum are due to an increase in the electron beam's oscillation amplitude within the wakefield.
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2.
  • Wojda, F., et al. (author)
  • Laser-driven plasma waves in capillary tubes
  • 2009
  • In: Physical Review E (Statistical, Nonlinear, and Soft Matter Physics). - 1539-3755. ; 80:6
  • Journal article (peer-reviewed)abstract
    • The excitation of plasma waves over a length of up to 8 cm is demonstrated using laser guiding of intense laser pulses through hydrogen-filled glass capillary tubes. The plasma waves are diagnosed by spectral analysis of the transmitted laser radiation. The dependence of the spectral redshift-measured as a function of filling pressure, capillary tube length, and incident laser energy-is in excellent agreement with simulation results. The longitudinal accelerating field inferred from the simulations is in the range of 1-10 GV/m.
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