Polarization Dependence of Bulk Ion Acceleration from Ultrathin Foils Irradiated by High-Intensity Ultrashort Laser Pulses

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      The acceleration of ions from ultrathin (10–100 nm) carbon foils has been investigated using intense (∼6 × 1020 W cm−2) ultrashort (45 fs) laser pulses, highlighting a strong dependence of the ion beam parameters on the laser polarization, with circularly polarized (CP) pulses producing the highest energies for both protons and carbons (25 − 30 MeV=nucleon); in particular, carbon ion energies obtained employing CP pulses were significantly higher (∼2.5 times) than for irradiations employing linearly polarized pulses. Particle-in-cell simulations indicate that radiation pressure acceleration becomes the dominant mechanism for the thinnest targets and CP pulses.

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      DOI

      Original languageEnglish
      Article number054801
      Number of pages6
      JournalPhysical Review Letters
      Journal publication date02 Aug 2017
      Issue number5
      Volume119
      DOIs
      StatePublished - 02 Aug 2017

      ID: 133320041