dorsal/arxiv
View SchemaLaser wakefield acceleration by petawatt ultra-short laser pulses
| Authors | L. M. Gorbunov, S. Yu. Kalmykov, P. Mora |
|---|---|
| Categories | |
| ArXiv ID | physics/0409138 |
| URL | https://arxiv.org/abs/physics/0409138 |
| DOI | 10.1063/1.1852469 |
Abstract
An ultra-short (about 30 fs) petawatt laser pulse focused with a wide focal spot (about 100 microns) in a rarefied plasma (electron density of order 10^{17} per cm^3) excites a nonlinear plasma wakefield which can accelerate injected electrons up to the GeV energy without any pulse channelling. In these conditions, propagation of the laser pulse with an over-critical power for relativistic self-focusing is almost the same as in vacuum. The nonlinear quasi-plane wake plasma wave, whose amplitude and phase velocity vary along the laser path, effectively traps and accelerates injected electrons with a wide range of initial energies. Electrons accelerated along two Rayleigh lengths (about eight centimeters) can gain an energy up to 1 GeV. In particular, the electrons trapped from quite a long (of order 330 fs) non-resonant electron beamlet of 1 MeV particles eventually form a low emittance bunch with energies in the range 900 MeV and energy spread about 10%. All these conclusions follow from two-dimensional simulations performed in cylindrical geometry by means of the fully relativistic time-averaged particle code WAKE.
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"abstract": "An ultra-short (about 30 fs) petawatt laser pulse focused with a wide focal\nspot (about 100 microns) in a rarefied plasma (electron density of order\n10^{17} per cm^3) excites a nonlinear plasma wakefield which can accelerate\ninjected electrons up to the GeV energy without any pulse channelling. In these\nconditions, propagation of the laser pulse with an over-critical power for\nrelativistic self-focusing is almost the same as in vacuum. The nonlinear\nquasi-plane wake plasma wave, whose amplitude and phase velocity vary along the\nlaser path, effectively traps and accelerates injected electrons with a wide\nrange of initial energies. Electrons accelerated along two Rayleigh lengths\n(about eight centimeters) can gain an energy up to 1 GeV. In particular, the\nelectrons trapped from quite a long (of order 330 fs) non-resonant electron\nbeamlet of 1 MeV particles eventually form a low emittance bunch with energies\nin the range 900 MeV and energy spread about 10%. All these conclusions follow\nfrom two-dimensional simulations performed in cylindrical geometry by means of\nthe fully relativistic time-averaged particle code WAKE.",
"arxiv_id": "physics/0409138",
"authors": [
"L. M. Gorbunov",
"S. Yu. Kalmykov",
"P. Mora"
],
"categories": [
"physics.plasm-ph",
"physics.acc-ph"
],
"doi": "10.1063/1.1852469",
"title": "Laser wakefield acceleration by petawatt ultra-short laser pulses",
"url": "https://arxiv.org/abs/physics/0409138"
},
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