Radiation-Pressure Acceleration of Ion Beams from Nanofoil Targets: The Leaky Light-Sail Regime

Bin Qiao, Matthew Zepf, Marco Borghesi, Brendan Dromey, Michael Geissler, A. Karmakar, P. Gibbon

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)
180 Downloads (Pure)

Abstract

A new ion radiation-pressure acceleration regime, the "leaky light sail," is proposed which uses sub-skin-depth nanometer foils irradiated by circularly polarized laser pulses. In the regime, the foil is partially transparent, continuously leaking electrons out along with the transmitted laser field. This feature can be exploited by a multispecies nanofoil configuration to stabilize the acceleration of the light ion component, supplementing the latter with an excess of electrons leaked from those associated with the heavy ions to avoid Coulomb explosion. It is shown by 2D particle-in-cell simulations that a monoenergetic proton beam with energy 18 MeV is produced by circularly polarized lasers at intensities of just 10(19) W/cm(2). 100 MeV proton beams are obtained by increasing the intensities to 2 x 10(20) W/cm(2).
Original languageEnglish
Article number155002
Number of pages4
JournalPhysical Review Letters
Volume105
Issue number15
DOIs
Publication statusPublished - 04 Oct 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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