Fast ion acceleration from thin foils irradiated by ultra-high intensity, ultra-high contrast laser pulses

R. Prasad, A. A. Andreev, S. Ter-Avetisyan, D. Doria, K. E. Quinn, L. Romagnani, C. M. Brenner, D. C. Carroll, N. P. Dover, D. Neely, P. S. Foster, P. Gallegos, J. S. Green, P. McKenna, Z. Najmudin, C. A. J. Palmer, J. Schreiber, M. J. V. Streeter, O. Tresca, M. ZepfM. Borghesi

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Abstract

Ion acceleration resulting from the interaction of ultra-high intensity (2 x 10(20) W/cm(2)) and ultra-high contrast (similar to 10(10)) laser pulses with 0.05-10 mu m thick Al foils at normal (0 degrees) and 35 degrees laser incidence is investigated. When decreasing the target thickness from 10 mu m down to 0.05 mu m, the accelerated ions become less divergent and the ion flux increases, particularly at normal (0 degrees) laser incidence on the target. A laser energy conversion into protons of,similar to 6.5% is estimated at 35 degrees laser incidence. Experimental results are in reasonable agreement with theoretical estimates and can be a benchmark for further theoretical and computational work.

Original languageEnglish
Article number121504
Pages (from-to)-
Number of pages3
JournalApplied Physics Letters
Volume99
Issue number12
DOIs
Publication statusPublished - 19 Sep 2011

Keywords

  • proton acceleration
  • aluminium
  • foils
  • thin foils
  • plasma light propagation

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