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Characterization of electron beams produced by ultrashort (30 fs) laser pulses

Abstract : 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 intensities (10^18–2×10^19 W/cm^2) and electron densities (1.5×10^18–1.5×10^20 cm^−3), from the “classical laser wakefield regime” to the “self-modulated laser wakefield” regime. In the best case the maximum electron energy reaches 70 MeV. It increases at lower electron densities and higher laser intensities. A total charge of 8 nC was measured. The presented simulation results indicate that the electrons are accelerated mainly by relativistic plasma waves, and, to some extent, by direct laser acceleration.
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Submitted on : Tuesday, March 1, 2011 - 6:22:51 PM
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Victor Malka, Jérôme Faure, J.R. Marques, François Amiranoff, Jean-Philippe Rousseau, et al.. Characterization of electron beams produced by ultrashort (30 fs) laser pulses. Physics of Plasmas, American Institute of Physics, 2001, 8 (6), pp.2605. ⟨10.1063/1.1374584⟩. ⟨hal-00572578⟩



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