@article{040d27b6f9ac40808206d7a42749ff57,
title = "Generation of ultrafast electron bunch trains via trapping into multiple periods of plasma wakefields",
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.",
author = "Grigory Golovin and Vojt{\v e}ch Horn{\'y} and Wenchao Yan and Colton Fruhling and Daniel Haden and Junzhi Wang and Sudeep Banerjee and Donald Umstadter",
note = "Funding Information: We are grateful to Dr. Serge Kalmykov, Dr. Min Chen, and Dr. Miroslav Krůs for fruitful discussions and thank Kevin Brown and Chad Petersen for their help with the experiments and operating the laser system. We acknowledge the Holland Computing Center at the University of Nebraska for providing computing infrastructure for the simulations. W.Y. acknowledges support from High Field Initiative Project No. CZ.02.1.01/0.0/0.0/15_003/0000449. This material is based upon the work supported by the National Science Foundation under Grant No. PHY-1535700 (ultra-low emittance electron beams), the U.S. Department of Energy, High-Energy Physics, under Award No. DE-SC0019421 (Controlled Injection of electrons for the Improved Performance of Laser-Wakefield Acceleration), and the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DE-FG02-05ER15663 (Laser-Driven X-rays for Ultrafast Science). This support does not constitute an expressed or implied endorsement on the part of the Government. Publisher Copyright: {\textcopyright} 2020 Author(s).",
year = "2020",
month = mar,
day = "1",
doi = "10.1063/1.5141953",
language = "English (US)",
volume = "27",
journal = "Physics of Plasmas",
issn = "1070-664X",
publisher = "American Institute of Physics Publising LLC",
number = "3",
}