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.



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

      ID: 133320041