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http://hdl.handle.net/10071/6725
acessibilidade
Title: Electron trapping and acceleration on a downward density ramp: a two-stage approach
Authors: Trines, R. M. G. M.
Bingham, R.
Najmudin, Z.
Mangles, S. P. D.
Silva, L. O.
Fonseca, R. A.
Norreys, P. A.
Issue Date: 2010
Publisher: IOP Publishing Ltd
Abstract: In a recent experiment at Lawrence Berkeley National Laboratory (Geddes et al 2008 Phys. Rev. Lett. 100 215004), electron bunches with about 1 MeV mean energy and small absolute energy spread (about 0.3 MeV) were produced by plasma wave breaking on a downward density ramp. It was then speculated that such a bunch might be accelerated further in a plasma of low constant density, while mostly preserving its small absolute energy spread. This would then lead to a bunch with a high mean energy and very low relative energy spread. In this paper, trapping of a low-energy, low-spread electron bunch on a downward density ramp, followed by acceleration in a constant-density plasma, has been explored through particle-in-cell simulations. It has been found that the scheme works best when it is used as a separate injection stage for a laser-wakefield accelerator, where the injection and acceleration stages are separated by a vacuum gap.
Description: WOS:000277355400025 (Nº de Acesso Web of Science)
“Prémio Científico ISCTE-IUL 2011”
Peer reviewed: Sim
URI: http://dx.doi.org/10.1088/1367-2630/12/4/045027
https://ciencia.iscte-iul.pt/public/pub/id/6395
http://hdl.handle.net/10071/6725
ISSN: 1367-2630
Publisher version: The definitive version is available at: http://dx.doi.org/10.1088/1367-2630/12/4/045027
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

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