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Self-injection threshold in self-guided laser wakefield accelerators

Mangles, S. P. D. ; Genoud, Guillaume LU ; Bloom, M. S. ; Burza, Matthias LU ; Najmudin, Z. ; Persson, Anders LU ; Svensson, Kristoffer LU ; Thomas, A. G. R. and Wahlström, Claes-Göran LU (2012) In Physical Review Special Topics. Accelerators and Beams 15(1).
Abstract
A laser pulse traveling through a plasma can excite large amplitude plasma waves that can be used to accelerate relativistic electron beams in a very short distance-a technique called laser wakefield acceleration. Many wakefield acceleration experiments rely on the process of wave breaking, or self-injection, to inject electrons into the wave, while other injection techniques rely on operation without self-injection. We present an experimental study into the parameters, including the pulse energy, focal spot quality, and pulse power, that determine whether or not a wakefield accelerator will self-inject. By taking into account the processes of self-focusing and pulse compression we are able to extend a previously described theoretical... (More)
A laser pulse traveling through a plasma can excite large amplitude plasma waves that can be used to accelerate relativistic electron beams in a very short distance-a technique called laser wakefield acceleration. Many wakefield acceleration experiments rely on the process of wave breaking, or self-injection, to inject electrons into the wave, while other injection techniques rely on operation without self-injection. We present an experimental study into the parameters, including the pulse energy, focal spot quality, and pulse power, that determine whether or not a wakefield accelerator will self-inject. By taking into account the processes of self-focusing and pulse compression we are able to extend a previously described theoretical model, where the minimum bubble size k(p)r(b) required for trapping is not constant but varies slowly with density and find excellent agreement with this model. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Special Topics. Accelerators and Beams
volume
15
issue
1
article number
011302
publisher
American Physical Society
external identifiers
  • wos:000299327500002
  • scopus:84856515707
ISSN
1098-4402
DOI
10.1103/PhysRevSTAB.15.011302
language
English
LU publication?
yes
id
09cc7cdf-76b3-457d-bd4d-b36fca6010c2 (old id 2355305)
date added to LUP
2016-04-01 15:00:54
date last changed
2022-01-28 03:37:37
@article{09cc7cdf-76b3-457d-bd4d-b36fca6010c2,
  abstract     = {{A laser pulse traveling through a plasma can excite large amplitude plasma waves that can be used to accelerate relativistic electron beams in a very short distance-a technique called laser wakefield acceleration. Many wakefield acceleration experiments rely on the process of wave breaking, or self-injection, to inject electrons into the wave, while other injection techniques rely on operation without self-injection. We present an experimental study into the parameters, including the pulse energy, focal spot quality, and pulse power, that determine whether or not a wakefield accelerator will self-inject. By taking into account the processes of self-focusing and pulse compression we are able to extend a previously described theoretical model, where the minimum bubble size k(p)r(b) required for trapping is not constant but varies slowly with density and find excellent agreement with this model.}},
  author       = {{Mangles, S. P. D. and Genoud, Guillaume and Bloom, M. S. and Burza, Matthias and Najmudin, Z. and Persson, Anders and Svensson, Kristoffer and Thomas, A. G. R. and Wahlström, Claes-Göran}},
  issn         = {{1098-4402}},
  language     = {{eng}},
  number       = {{1}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Special Topics. Accelerators and Beams}},
  title        = {{Self-injection threshold in self-guided laser wakefield accelerators}},
  url          = {{https://lup.lub.lu.se/search/files/4297724/2365683.pdf}},
  doi          = {{10.1103/PhysRevSTAB.15.011302}},
  volume       = {{15}},
  year         = {{2012}},
}