Plasma scale length effects on protons generated in ultra-intense laser–plasmas

O. Culfa*, G. J. Tallents, M. E. Korkmaz, A. K. Rossall, E. Wagenaars, C. P. Ridgers, C. D. Murphy, N. Booth, D. C. Carroll, L. A. Wilson, K. L. Lancaster, N. C. Woolsey

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The energy spectra of protons generated by ultra-intense (1020 W cm−2) laser interactions with a preformed plasma of scale length measured by shadowgraphy are presented. The effects of the preformed plasma on the proton beam temperature and the number of protons are evaluated. Two-dimensional EPOCH particle-in-cell code simulations of the proton spectra are found to be in agreement with measurements over a range of experimental parameters.

Original languageEnglish
Pages (from-to)58-63
Number of pages6
JournalLaser and Particle Beams
Issue number1
Early online date22 Dec 2016
Publication statusPublished - 1 Mar 2017

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© Cambridge University Press 2016. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.


  • High-power lasers
  • Laser–plasma interactions
  • Proton acceleration

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