Spectral enhancement in the double pulse regime of laser proton acceleration

K. Markey, P. McKenna, C. M. Brenner, D. C. Carroll, M.M. Günther, K. Harres, S. Kar, K. Lancaster, F. Nürnberg, M. N. Quinn, A. P. L. Robinson, M. Roth, M. Zepf, D. Neely

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


The use of two separate ultraintense laser pulses in laser-proton acceleration was compared to the single pulse case employing the same total laser energy. A double pulse profile, with the temporal separation of the pulses varied between 0.75-2.5 ps, was shown to result in an increased maximum proton energy and an increase in conversion efficiency to fast protons by up to a factor of 3.3. Particle-in-cell simulations indicate the existence of a two stage acceleration process. The second phase, induced by the main pulse preferentially accelerates slower protons located deeper in the plasma, in contrast to conventional target normal sheath acceleration.

Original languageEnglish
Article number195008
Number of pages4
JournalPhysical Review Letters
Issue number19
Publication statusPublished - 5 Nov 2010


  • plasma
  • irradiation
  • generation
  • absorption
  • expansion
  • targets
  • driven
  • solids


Dive into the research topics of 'Spectral enhancement in the double pulse regime of laser proton acceleration'. Together they form a unique fingerprint.

Cite this