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Controlling the spectrum of x-rays generated in a laser-plasma accelerator by tailoring the laser wavefront

Mangles, S. P. D.; Genoud, Guillaume LU ; Kneip, S.; Burza, Matthias LU ; Cassou, K.; Cros, B.; Dover, N. P.; Kamperidis, Christos LU ; Najmudin, Z. and Persson, Anders LU , et al. (2009) In Applied Physics Letters 95(18).
Abstract
By tailoring the wavefront of the laser pulse used in a laser-wakefield accelerator, we show that the properties of the x-rays produced due to the electron beam's betatron oscillations in the plasma can be controlled. By creating a wavefront with coma, we find that the critical energy of the synchrotronlike x-ray spectrum can be significantly increased. The coma does not substantially change the energy of the electron beam, but does increase its divergence and produces an energy-dependent exit angle, indicating that changes in the x-ray spectrum are due to an increase in the electron beam's oscillation amplitude within the wakefield.
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
accelerators, wakefield, plasma X-ray sources, betatrons, plasma accelerators
in
Applied Physics Letters
volume
95
issue
18
publisher
American Institute of Physics
external identifiers
  • wos:000271666800006
  • scopus:71049146833
ISSN
0003-6951
DOI
10.1063/1.3258022
language
English
LU publication?
yes
id
af3121a6-2ceb-43f1-8fc0-b48e2dbe5986 (old id 1519649)
date added to LUP
2009-12-28 12:05:38
date last changed
2017-08-27 04:12:37
@article{af3121a6-2ceb-43f1-8fc0-b48e2dbe5986,
  abstract     = {By tailoring the wavefront of the laser pulse used in a laser-wakefield accelerator, we show that the properties of the x-rays produced due to the electron beam's betatron oscillations in the plasma can be controlled. By creating a wavefront with coma, we find that the critical energy of the synchrotronlike x-ray spectrum can be significantly increased. The coma does not substantially change the energy of the electron beam, but does increase its divergence and produces an energy-dependent exit angle, indicating that changes in the x-ray spectrum are due to an increase in the electron beam's oscillation amplitude within the wakefield.},
  articleno    = {181106},
  author       = {Mangles, S. P. D. and Genoud, Guillaume and Kneip, S. and Burza, Matthias and Cassou, K. and Cros, B. and Dover, N. P. and Kamperidis, Christos and Najmudin, Z. and Persson, Anders and Schreiber, J. and Wojda, F. and Wahlström, Claes-Göran},
  issn         = {0003-6951},
  keyword      = {accelerators,wakefield,plasma X-ray sources,betatrons,plasma accelerators},
  language     = {eng},
  number       = {18},
  publisher    = {American Institute of Physics},
  series       = {Applied Physics Letters},
  title        = {Controlling the spectrum of x-rays generated in a laser-plasma accelerator by tailoring the laser wavefront},
  url          = {http://dx.doi.org/10.1063/1.3258022},
  volume       = {95},
  year         = {2009},
}