High flux, beamed neutron sources employing deuteron-rich ion beams from D 2 O-ice layered targets

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      • A Alejo
      • A. G. Krygier
      • H Ahmed
      • J T Morrison
      • R J Clarke
      • J. Fuchs
      • J. S. Green
      • J. S. Green
      • D. Jung
      • A. Kleinschmidt
      • Z. Najmudin
      • H. Nakamura
      • P. Norreys
      • M. Notley
      • M. Oliver
      • M. Roth
      • L. Vassura
      • M Zepf
      • M Borghesi
      • R R Freeman
      • S Kar

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      A forwardly-peaked bright neutron source was produced using a laser-driven, deuteron-rich ion beam in a pitcher-catcher scenario. A proton-free ion source was produced via target normal sheath acceleration from Au foils having a thin layer of D_2 O ice at the rear side, irradiated by sub-petawatt laser pulses (∼200 J, ∼750 fs) at peak intensity 2 x 10^20 Wcm^-2. The neutrons were preferentially produced in a beam of ∼70° FWHM cone along the ion beam forward direction, with maximum energy up to ∼40 MeV and a peak flux along the axis 2 x 10^9 n/sr for neutron energy above 2.5 MeV. The experimental data is in good agreement with the simulations carried out for the d(d,n)He reaction using the deuteron beam produced by the ice-layered target.
      Original languageUndefined/Unknown
      Number of pages7
      Pages (from-to)064004
      JournalPlasma Physics and Controlled Fusion
      Journal publication date24 Apr 2017
      Issue number6
      Volume59
      StatePublished - 24 Apr 2017

      ID: 128353488