High-Intensity Laser Induced Ion Acceleration from Heavy-Water Droplets

S. Karsch, S. Düsterer, H. Schwoerer, F. Ewald, D. Habs, M. Hegelich, G. Pretzler, A. Pukhov, K. Witte, and R. Sauerbrey
Phys. Rev. Lett. 91, 015001 – Published 3 July 2003

Abstract

Fusion neutrons from a heavy water droplet target irradiated with laser pulses of 3×1019W/cm2 and from a deuterated secondary target are observed by a time-of-flight (TOF) neutron spectrometer. The observed TOF spectrum can be explained by fusion of deuterium ions simultaneously originating from two different sources: ion acceleration in the laser focus by ponderomotively induced charge separation and target-normal sheath acceleration off the target rear surface. The experimental findings agree well with 3D particle-in-cell simulations.

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  • Received 29 August 2002

DOI:https://doi.org/10.1103/PhysRevLett.91.015001

©2003 American Physical Society

Authors & Affiliations

S. Karsch1,2, S. Düsterer3, H. Schwoerer3, F. Ewald3, D. Habs2, M. Hegelich1,2, G. Pretzler4, A. Pukhov4, K. Witte1, and R. Sauerbrey3

  • 1Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany
  • 2Universität München, 85748 Garching, Germany
  • 3Friedrich-Schiller-Universität Jena, 07743 Jena, Germany
  • 4Universität Düsseldorf, 40225 Düsseldorf, Germany

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Vol. 91, Iss. 1 — 4 July 2003

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