Phys. Rev. Lett. 70, 37–40 (1993)Ultrahigh-gradient acceleration of injected electrons by laser-excited relativistic electron plasma wavesReceived 14 September 1992; published in the issue dated 4 January 1993 High-gradient acceleration of externally injected 2.1-MeV electrons by a laser beat wave driven relativistic plasma wave has been demonstrated for the first time. Electrons with energies up to the detection limit of 9.1 MeV were detected when such a plasma wave was resonantly excited using a two-frequency laser. This implies a gradient of 0.7 GeV/m, corresponding to a plasma-wave amplitude of more than 8%. The electron signal was below detection threshold without injection or when the laser was operated on a single frequency. © 1993 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.70.37
DOI:
10.1103/PhysRevLett.70.37
PACS:
52.35.Mw, 52.40.Nk, 52.75.Di
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