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Ultra-intense laser pulses in near-critical underdense plasmas - Radiation reaction and energy partitioning

Wallin, Erik; Gonoskov, Arkady; Harvey, Christopher; Lundh, Olle LU and Marklund, Mattias (2017) In Journal of Plasma Physics 83(2).
Abstract

Although, for current laser pulse energies, the weakly nonlinear regime of laser wakefield acceleration is known to be the optimal for reaching the highest possible electron energies, the capabilities of upcoming large laser systems will provide the possibility of running highly nonlinear regimes of laser pulse propagation in underdense or near-critical plasmas. Using an extended particle-in-cell (PIC) model that takes into account all the relevant physics, we show that such regimes can be implemented with external guiding for a relatively long distance of propagation and allow for the stable transformation of laser energy into other types of energy, including the kinetic energy of a large number of high energy electrons and their... (More)

Although, for current laser pulse energies, the weakly nonlinear regime of laser wakefield acceleration is known to be the optimal for reaching the highest possible electron energies, the capabilities of upcoming large laser systems will provide the possibility of running highly nonlinear regimes of laser pulse propagation in underdense or near-critical plasmas. Using an extended particle-in-cell (PIC) model that takes into account all the relevant physics, we show that such regimes can be implemented with external guiding for a relatively long distance of propagation and allow for the stable transformation of laser energy into other types of energy, including the kinetic energy of a large number of high energy electrons and their incoherent emission of photons. This is despite the fact that the high intensity of the laser pulse triggers a number of new mechanisms of energy depletion, which we investigate systematically.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Plasma interactions, Plasma nonlinear phenomena, Plasma simulation
in
Journal of Plasma Physics
volume
83
issue
2
publisher
Cambridge University Press
external identifiers
  • scopus:85033783182
  • wos:000407255500014
ISSN
0022-3778
DOI
10.1017/S0022377817000320
language
English
LU publication?
yes
id
afdfd3f0-6327-4cd8-9d84-6328e8b0dbd5
date added to LUP
2017-11-29 10:58:45
date last changed
2018-05-06 04:38:28
@article{afdfd3f0-6327-4cd8-9d84-6328e8b0dbd5,
  abstract     = {<p>Although, for current laser pulse energies, the weakly nonlinear regime of laser wakefield acceleration is known to be the optimal for reaching the highest possible electron energies, the capabilities of upcoming large laser systems will provide the possibility of running highly nonlinear regimes of laser pulse propagation in underdense or near-critical plasmas. Using an extended particle-in-cell (PIC) model that takes into account all the relevant physics, we show that such regimes can be implemented with external guiding for a relatively long distance of propagation and allow for the stable transformation of laser energy into other types of energy, including the kinetic energy of a large number of high energy electrons and their incoherent emission of photons. This is despite the fact that the high intensity of the laser pulse triggers a number of new mechanisms of energy depletion, which we investigate systematically.</p>},
  articleno    = {905830208},
  author       = {Wallin, Erik and Gonoskov, Arkady and Harvey, Christopher and Lundh, Olle and Marklund, Mattias},
  issn         = {0022-3778},
  keyword      = {Plasma interactions,Plasma nonlinear phenomena,Plasma simulation},
  language     = {eng},
  month        = {04},
  number       = {2},
  publisher    = {Cambridge University Press},
  series       = {Journal of Plasma Physics},
  title        = {Ultra-intense laser pulses in near-critical underdense plasmas - Radiation reaction and energy partitioning},
  url          = {http://dx.doi.org/10.1017/S0022377817000320},
  volume       = {83},
  year         = {2017},
}