High charge ion beams with achromatic divergence by the BELLA petawatt laser

ORAL

Abstract

We report on an experimental study of ion acceleration from micrometer thick metallic targets using the BELLA petawatt laser. Here, we show that for the first time, high quality ion beams can be generated under 0.5 Hz high repetition rate with a petawatt laser system, delivering unprecedented single shot doses up few 1000s Gy. By using a large focal spot size (r0=53 um), proton beams with a significant reduced divergence (<250 mrad) are observed. In addition, the proton beams present a remarkable thickness-dependent achromatic feature in high energy range, for example, in case of 2 um Ti target, the proton beams present constant divergence angle of ~100 mrad beyond 3.2 MeV. Such ion beams are of particularly interest for applications that require high ion charge density.

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Presenters

  • Jianhui Bin

    Lawrence Berkeley National Laboratory, USA, Lawrence Berkeley Natl Lab

Authors

  • Jianhui Bin

    Lawrence Berkeley National Laboratory, USA, Lawrence Berkeley Natl Lab

  • Sven Steinke

    Lawrence Berkeley Natl Lab

  • Jaehong Park

    Princeton University, Princeton, NJ, USA, Lawrence Berkeley Natl Lab, Berkeley, CA, USA, Lawrence Berkeley Natl Lab

  • Qing Ji

    Lawrence Berkeley Natl Lab

  • Kei Nakamura

    Lawrence Berkeley Natl Lab, LBNL

  • Anthony J Gonsalves

    Lawrence Berkeley Natl Lab, Lawrence Berkeley National Laboratory, USA, LBNL

  • Stepan Bulanov

    Univ of California - Berkeley, Lawrence Berkeley Natl Lab, Lawrence Berkeley National Laboratory

  • Csaba Toth

    Lawrence Berkeley Natl Lab, LBNL, LBNL

  • Jean-Luc Vay

    Lawrence Berkeley Natl Lab

  • Carl B Schroeder

    Lawrence Berkeley Natl Lab, LBNL

  • Cameron Guy Robinson Geddes

    Lawrence Berkeley National Lab, Lawrence Berkeley Natl Lab, LBNL

  • Eric Esarey

    Lawrence Berkeley Natl Lab, LBNL

  • Thomas Schenkel

    Lawrence Berkeley Natl Lab

  • Wim Pieter Leemans

    Lawrence Berkeley Natl Lab, Lawrence Berkeley National Laboratory, USA, Lawrence Berkeley Natl Lab, U.C. Berkeley, Lawrence Berkeley Natl Lab, Univ of California - Berkeley, LBNL, UC Berkeley