• Corpus ID: 117870613

Buffered spectrally-peaked proton beams in the relativistic-transparency regime

  title={Buffered spectrally-peaked proton beams in the relativistic-transparency regime},
  author={Nicholas P. Dover and M. J. V. Streeter and Charlotte A J Palmer and Hamad Ahmed and Bruno Albertazzi and Marco Borghesi and David C. Carroll and Julien Fuchs and Robert Heathcote and Peter Hilz and K. F. Kakolee and Satyabrata Kar and R. Kodama and Akira Kon and D. A. Maclellan and Paul McKenna and Sabrina R. Nagel and Motoaki Nakatsutsumi and David Neely and Margaret Notley and Rajendra Prasad and G. G. Scott and Motonobu Tampo and Matthew Zepf and J{\"o}rg Schreiber and Z. Najmudin},
  journal={arXiv: Plasma Physics},
Spectrally-peaked proton beams ($E_{p}\approx 8$ MeV, $\Delta E\approx 4$ MeV) have been observed from the interaction of an intense laser ($> 10^{19 }$ Wcm$^{-2}$) with ultrathin CH foils, as measured by spectrally-resolved full beam profiles. These beams are reproducibly generated for foil thicknesses (5-100 nm), and exhibit narrowing divergence with decreasing target thickness down to $\approx 8^\circ$ for 5 nm. Simulations demonstrate that the narrow energy spread feature is a result of… 

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