Dominance of Radiation Pressure in Ion Acceleration with Linearly Polarized Pulses at Intensities of 10(21) W cm(-2)

Bin Qiao, Satyabrata Kar, Michael Geissler, P. Gibbon, Matthew Zepf, Marco Borghesi

Research output: Contribution to journalArticle

70 Citations (Scopus)
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Abstract

A novel regime is proposed where, by employing linearly polarized laser pulses at intensities 10(21) W cm(-2) (2 orders of magnitude lower than discussed in previous work [T. Esirkepov et al., Phys. Rev. Lett. 92, 175003 (2004)]), ions are dominantly accelerated from ultrathin foils by the radiation pressure and have monoenergetic spectra. In this regime, ions accelerated from the hole-boring process quickly catch up with the ions accelerated by target normal sheath acceleration, and they then join in a single bunch, undergoing a hybrid light-sail-target normal sheath acceleration. Under an appropriate coupling condition between foil thickness, laser intensity, and pulse duration, laser radiation pressure can be dominant in this hybrid acceleration. Two-dimensional particle-in-cell simulations show that 1.26 GeV quasimonoenergetic C6+ beams are obtained by linearly polarized laser pulses at intensities of 10(21) W cm(-2).
Original languageEnglish
Article number115002
JournalPhysical Review Letters
Volume108
Issue number11
DOIs
Publication statusPublished - 12 Mar 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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