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Electron Bunch Evolution in Laser-wakefield Acceleration by Cardenas, D. E. ;Chou, S. ;Wallin, E. ;Xu, J. ;Hofmann, L. ;Buck, A. ;Schmid, K. ;Rivas, D. E. ;Shen, B. ;Gonoskov, A. ;Marklund, M. ;Veisz, L. is a scholarly article available to read on EtoBox.

What is Electron Bunch Evolution in Laser-wakefield Acceleration about?

We report on systematic and high-precision measurements of the evolution of electron beams in a laserwakefield accelerator (LWFA). Utilizing shock-front injection, a technique providing stable, tunable and high-quality electron bunches, acceleration and deceleration of few-MeV quasimonoenergetic beams were measured with cutting-edge technology sub-5-fs and 8-fs laser pulses. We explain the observations with dephasing, an effect that fundamentally limits the performance of LWFAs. Typical density dependent electron energy evolution with 57-300 μm dephasing length and 6-20 MeV peak energy was observed and is well described by a parabolic fit. This is a promising electron source for time-resolved few-fs electron diffraction.

Author

Cardenas, D. E. ;Chou, S. ;Wallin, E. ;Xu, J. ;Hofmann, L. ;Buck, A. ;Schmid, K. ;Rivas, D. E. ;Shen, B. ;Gonoskov, A. ;Marklund, M. ;Veisz, L.

Publisher

American Physical Society (APS)

Published

2020

Language

EN