Autocorrelation Measurement of Fast Electron Pulses Emitted through the Interaction of Femtosecond Laser Pulses with a Solid Target

Shunsuke Inoue, Shigeki Tokita, Kazuto Otani, Masaki Hashida, Masayasu Hata, Hitoshi Sakagami, Toshihiro Taguchi, and Shuji Sakabe
Phys. Rev. Lett. 109, 185001 – Published 31 October 2012

Abstract

We report the first direct measurement of the emission duration of laser-accelerated fast electrons from the surface of a solid target irradiated by a high-intensity femtosecond laser pulse. The emission duration is determined by autocorrelation measurement using the Coulomb repulsive forces that act on two equivalent electron pulses. The emission duration depends on the laser pulse duration for laser pulses of 200–690 fs. Numerical modeling of three-dimensional charged particle dynamics indicates that the emission duration of fast electrons is almost equal to the duration of the laser pulse.

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  • Received 15 May 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.185001

© 2012 American Physical Society

Authors & Affiliations

Shunsuke Inoue1,2,*, Shigeki Tokita1,2, Kazuto Otani1,2, Masaki Hashida1,2, Masayasu Hata3, Hitoshi Sakagami4, Toshihiro Taguchi5, and Shuji Sakabe1,2

  • 1Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
  • 2Department of Physics, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, Japan
  • 3Department of Physics, Nagoya University, Nagoya, Aichi 464-8602, Japan
  • 4Fundamental Physics Simulation Division, National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
  • 5Department of Electrical and Electronic Engineering, Setsunan University, Neyagawa, Osaka 572-8508, Japan

  • *Corresponding author.

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Issue

Vol. 109, Iss. 18 — 2 November 2012

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