Ahmed Ben-Ismaïl

TL;DR: In this paper, the authors present wide-band spectral measurements of coherent transition radiation which they use for temporal characterization and show that the electron beam, produced using controlled optical injection, contains a temporal feature that can be identified as a 15 pC, 1.4-1.8 fs electron bunch (root mean square) leading to a peak current of 3-4 kA depending on the bunch shape.

TL;DR: It is shown that by tuning the optical injection parameters, one is able to control the phase-space volume of the injected particles, and thus the charge and the energy spread of the beam.

TL;DR: A review of recent simulation and experimental studies of the colliding pulse injection scheme is presented in this paper, where the dominant effects for modeling electron injection in plasma waves are (i) stochastic heating and (ii) wakefield inhibition at the collision.

TL;DR: In this article, the experimental demonstration of 30 μm resolution radiography of dense objects using an optimized gamma-ray source, produced with a high-quality electron beam delivered by a compact laser-plasma accelerator.

TL;DR: The measurement of the x-ray emission position and length provides insight on the dynamics of the interaction, including the electron self-injection region, possible multiple injection, and the role of the electron beam driven wakefield.