Neutron Production by 200 mJ Ultrashort Laser Pulses

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We report the observation of neutrons rf:leased from d(d,n) He-3 fusion reactions in the focus of 200 mJ, 160 fs Ti:sapphire laser pulses on a deuterated polyethylene target. Optimizing the fast electron and ion generation by applying a well-defined prepulse led to an average rate of 140 neutrons per shot. Furthermore, the production of a substantial number of MeV gamma rays could be observed. The occurrence of neutrons and gamma rays is attributed to the formation and explosion of a relativistic plasma channel in the laser focus, which is confirmed by numerical calculations.


  • G. Pretzler
  • A. Saemann
  • A. Pukhov
  • Dirk Rudolph
  • T. Schatz
  • U. Schramm
  • P. Thirolf
  • D. Habs
  • K. Eidmann
  • G. D. Tsakiris
  • J. Meyer-ter-Vehn
  • K. J. Witte
External organisations
  • External Organization - Unknown
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Pages (from-to)1165-1168
JournalPhysical Review E
Issue number1
Publication statusPublished - 1998
Publication categoryResearch

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