Generation of ultrafast electron bunch trains via trapping into multiple periods of plasma wakefields

Grigory Golovin, Vojtěch Horný, Wenchao Yan, Colton Fruhling, Daniel Haden, Junzhi Wang, Sudeep Banerjee, Donald Umstadter

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We demonstrate a novel approach to the generation of femtosecond electron bunch trains via laser-driven wakefield acceleration. We use two independent high-intensity laser pulses, a drive, and an injector, each creating their own plasma wakes. The interaction of the laser pulses and their wakes results in a periodic injection of free electrons in the drive plasma wake via several mechanisms, including ponderomotive drift, wake-wake interference, and pre-acceleration of electrons directly by strong laser fields. Electron trains were generated with up to four quasi-monoenergetic bunches, each separated in time by a plasma period. The time profile of the generated trains is deduced from an analysis of beam loading and confirmed using 2D particle-in-cell simulations.

Original languageEnglish (US)
Article number033105
JournalPhysics of Plasmas
Volume27
Issue number3
DOIs
StatePublished - Mar 1 2020

ASJC Scopus subject areas

  • Condensed Matter Physics

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