Table-Top Laser-Based Source of Femtosecond, Collimated, Ultrarelativistic Positron Beams

G. Sarri*, W. Schumaker, A. Di Piazza, M. Vargas, B. Dromey, M. E. Dieckmann, V. Chvykov, A. Maksimchuk, V. Yanovsky, Z. H. He, B. X. Hou, J. A. Nees, A. G. R. Thomas, C. H. Keitel, M. Zepf, K. Krushelnick

*Corresponding author for this work

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Abstract

The generation of ultrarelativistic positron beams with short duration (τe+≃30 fs), small divergence (θe+≃3 mrad), and high density (n e+≃1014-1015 cm-3) from a fully optical setup is reported. The detected positron beam propagates with a high-density electron beam and γ rays of similar spectral shape and peak energy, thus closely resembling the structure of an astrophysical leptonic jet. It is envisaged that this experimental evidence, besides the intrinsic relevance to laser-driven particle acceleration, may open the pathway for the small-scale study of astrophysical leptonic jets in the laboratory. 

Original languageEnglish
Article number255002
Number of pages5
JournalPhysical Review Letters
Volume110
Issue number25
DOIs
Publication statusPublished - 20 Jun 2013

Keywords

  • GAMMA-RAY BURSTS
  • ELECTRON-BEAMS
  • PLASMA
  • ACCELERATOR
  • GENERATION
  • SHOCK

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