Very collimated bunches of high energy electrons have been produced by focusing super-intense femtosecond laser pulses in submillimeter under-dense plasmas. The density of the plasma, preformed with the laser exploding-foil technique, was mapped using Nomarski interferometry. The electron beam was fully characterized: up to 10(9) electrons per shot were accelerated, most of which in a beam of aperture below 10(-3) sterad, with energies up to 40 MeV. These measurements, which are well modeled by three-dimensional numerical simulations, validate a reliable method to generate ultrashort and ultracollimated electron bunches. (C) 2002 American Institute of Physics.
|Autori:||Giulietti D; Galimberti M; Giulietti A; Gizzi LA; Numico R; Tomassini P; Borghesi M; Malka V; Fritzler S; Pittman M; Phouc KT; Pukhov A|
|Titolo:||Production of ultracollimated bunches of multi-MeV electrons by 35 fs laser pulses propagating in exploding-foil plasmas|
|Anno del prodotto:||2002|
|Digital Object Identifier (DOI):||10.1063/1.1498116|
|Appare nelle tipologie:||1.1 Articolo in rivista|