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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)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Special Topics. Accelerators and Beams
volume
15
issue
1
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
2012-02-24 08:47:22
date last changed
2017-08-27 05:02:16
@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.},
  articleno    = {011302},
  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          = {http://dx.doi.org/10.1103/PhysRevSTAB.15.011302},
  volume       = {15},
  year         = {2012},
}