Scientific Results

Production of high-quality electron beams in numerical experiments of laser wakefield acceleration with longitudinal wave breaking

Year: 2003

Authors: Tomassini P., Galimberti M., Giulietti A., Giulietti D., Gizzi LA., Labate L., Pegoraro F.

Autors Affiliation: CNR, Area Ric, IPCF, Intense Laser Irradiat Lab, I-56124 Pisa, Italy;
Univ Pisa, Dipartimento Fis, I-56124 Pisa, Italy;
INFM, Unita Pisa, I-56124 Pisa, Italy;
Univ Bologna, Dipartmento Fis, Bologna, Italy

Abstract: In 1998 Bulanov et al. [Phys. Rev. E 58, R5257 (1998)] proposed a novel scheme for the production of high-quality electron beams in laser wakefield acceleration in which a controlled longitudinal non-linear wave breaking is induced by a tailored electron density profile. This proposal was supported by both analytical and numerical results in a spatially one-dimensional configuration. In this paper we present results of a particle-in-cell simulation, two-dimensional in space and three-dimensional in the fields, of the interaction of an ultraintense laser pulse with a preformed plasma where the electron density decreases steeply from a first to a second plateau. We show that in our regime two-dimensional effects play a relevant role, allowing the production of well collimated, short and almost monochromatic electron beam. Remarkably low values of transverse and longitudinal normalized beam emittance epsilon(rms)(tr)=9×10(-2) mm mrad and epsilon(rms)(lon)=2 mm keV are obtained.

Journal/Review: PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS

Volume: 6 (12)      Pages from: 121301  to: 121301

KeyWords: thomson scattering; plasma-wave; pulses; wake; field
DOI: 10.1103/PhysRevSTAB.6.121301

Citations: 68
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