Production of high-quality electron beams in numerical experiments of laser wakefield acceleration with longitudinal wave breaking
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; fieldDOI: 10.1103/PhysRevSTAB.6.121301Citations: 71data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-11-28References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here