title: Compression of subrelativistic space-charge-dominated electron bunches for single-shot femtosecond electron diffraction.
abstract: We demonstrate the compression of 95 keV, space-charge-dominated electron bunches to sub-100 fs durations. These bunches have sufficient charge (200 fC) and are of sufficient quality to capture a diffraction pattern with a single shot, which we demonstrate by a diffraction experiment on a polycrystalline gold foil. Compression is realized by means of velocity bunching by inverting the positive space-charge-induced velocity chirp. This inversion is induced by the oscillatory longitudinal electric field of a 3 GHz radio-frequency cavity. The arrival time jitter is measured to be 80 fs.
authors.affiliation: Department of Applied Physics, Eindhoven University of Technology, Eindhoven, The Netherlands.
authors.forename: T
authors.initials: T
authors.lastname: van Oudheusden
authors.forename: P L E M
authors.initials: PL
authors.lastname: Pasmans
authors.forename: S B
authors.initials: SB
authors.lastname: van der Geer
authors.forename: M J
authors.initials: MJ
authors.lastname: de Loos
authors.forename: M J
authors.initials: MJ
authors.lastname: van der Wiel
authors.forename: O J
authors.initials: OJ
authors.lastname: Luiten