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, S. Y. Chen

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

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.

Original languageEnglish
Article number115003
JournalPhysical Review Letters
Volume94
Issue number11
DOIs
StatePublished - 25 Mar 2005

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