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Spectral modification of laser-accelerated proton beams by self-generated magnetic fields

Robinson, A. P. L.; Foster, P.; Adams, D.; Carroll, D. C.; Dromey, B.; Hawkes, S.; Kar, S.; Li, Y. T.; Markey, K. and McKenna, P., et al. (2009) In New Journal of Physics 11.
Abstract
Target normal measurements of proton energy spectra from ultrathin (50-200 nm) planar foil targets irradiated by 10(19) W cm(-2) 40 fs laser pulses exhibit broad maxima that are not present in the energy spectra from micron thickness targets (6 mu m). The proton flux in the peak is considerably greater than the proton flux observed in the same energy range in thicker targets. Numerical modelling of the experiment indicates that this spectral modification in thin targets is caused by magnetic fields that grow at the rear of the target during the laser-target interaction.
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Contribution to journal
publication status
published
subject
in
New Journal of Physics
volume
11
publisher
IOP Publishing Ltd.
external identifiers
  • wos:000268991800007
  • scopus:69249157340
ISSN
1367-2630
DOI
10.1088/1367-2630/11/8/083018
language
English
LU publication?
yes
id
801580a4-f1d4-4f8c-b399-c7eba9b98f88 (old id 1477170)
date added to LUP
2009-09-23 12:28:02
date last changed
2017-07-09 03:49:10
@article{801580a4-f1d4-4f8c-b399-c7eba9b98f88,
  abstract     = {Target normal measurements of proton energy spectra from ultrathin (50-200 nm) planar foil targets irradiated by 10(19) W cm(-2) 40 fs laser pulses exhibit broad maxima that are not present in the energy spectra from micron thickness targets (6 mu m). The proton flux in the peak is considerably greater than the proton flux observed in the same energy range in thicker targets. Numerical modelling of the experiment indicates that this spectral modification in thin targets is caused by magnetic fields that grow at the rear of the target during the laser-target interaction.},
  articleno    = {083018},
  author       = {Robinson, A. P. L. and Foster, P. and Adams, D. and Carroll, D. C. and Dromey, B. and Hawkes, S. and Kar, S. and Li, Y. T. and Markey, K. and McKenna, P. and Spindloe, C. and Streeter, M. and Wahlström, Claes-Göran and Xu, M. H. and Zepf, M. and Neely, D.},
  issn         = {1367-2630},
  language     = {eng},
  publisher    = {IOP Publishing Ltd.},
  series       = {New Journal of Physics},
  title        = {Spectral modification of laser-accelerated proton beams by self-generated magnetic fields},
  url          = {http://dx.doi.org/10.1088/1367-2630/11/8/083018},
  volume       = {11},
  year         = {2009},
}