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A laser-plasma accelerator producing monoenergetic electron beams | | J Faure
; Y Glinec
; A Pukhov
; S Kiselev
; S Gordienko
; E Lefebvre
; J-P Rousseau
; F Burgy
; V Malka
; | | Date: |
30 Sep 2004 | | Journal: | Nature, 431 (7008), 541-4 | | Abstract: | Particle accelerators are used in a wide variety of fields, ranging from medicine and biology to high-energy physics. The accelerating fields in conventional accelerators are limited to a few tens of MeV m(-1), owing to material breakdown at the walls of the structure. Thus, the production of energetic particle beams currently requires large-scale accelerators and expensive infrastructures. Laser-plasma accelerators have been proposed as a next generation of compact accelerators because of the huge electric fields they can sustain (>100 GeV m(-1)). However, it has been difficult to use them efficiently for applications because they have produced poor-quality particle beams with large energy spreads, owing to a randomization of electrons in phase space. Here we demonstrate that this randomization can be suppressed and that the quality of the electron beams can be dramatically enhanced. Within a length of 3 mm, the laser drives a plasma bubble that traps and accelerates plasma electrons. The resulting electron beam is extremely collimated and quasi-monoenergetic, with a high charge of 0.5 nC at 170 MeV. | | Source: | PubMed, pmid15457253 doi: 10.1038/nature02963 | | Services: | Forum | Review | Favorites | |
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