Spatially Localized Self-Injection of Electrons in a Self-Modulated Laser-Wakefield Accelerator by Using a Laser-Induced Transient Density Ramp

T.-Y. Chien, C.-L. Chang, C.-H. Lee, J.-Y. Lin, J. Wang, and S.-Y. Chen
Phys. Rev. Lett. 94, 115003 – Published 24 March 2005

Abstract

By using a laser-induced transient density ramp, we demonstrate self-injection of electrons in a self-modulated laser-wakefield accelerator with spatial localization. The number of injected electrons reaches 1.7×108. The transient density ramp is produced by a prepulse propagating transversely to drill a density depression channel via ionization and expansion. The same mechanism of injection with comparable efficiency is also demonstrated with a transverse plasma waveguide driven by Coulomb explosion.

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  • Received 16 August 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.115003

©2005 American Physical Society

Authors & Affiliations

T.-Y. Chien1,2, C.-L. Chang1, C.-H. Lee3, J.-Y. Lin4, J. Wang1,2,5, and S.-Y. Chen1

  • 1Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan
  • 2Graduate Institute of Electro-Optical Engineering, National Taiwan University, Taipei 106, Taiwan
  • 3Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan
  • 4Department of Physics, National Chung Cheng University, Chia-Yi 621, Taiwan
  • 5Department of Electrical Engineering, National Taiwan University, Taipei 106, Taiwan

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Issue

Vol. 94, Iss. 11 — 25 March 2005

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