Generation of Stable, Low-Divergence Electron Beams by Laser Wakefield Acceleration in a Steady-State-Flow Gas Cell


Generation of Stable, Low-Divergence Electron Beams by Laser Wakefield Acceleration in a Steady-State-Flow Gas Cell

Osterhoff, J.; Popp, A.; Major, Z.; Marx, B.; Rowlands-Rees, T. P.; Fuchs, M.; Geissler, M.; Hörlein, R.; Hidding, B.; Becker, S.; Peralta, E. A.; Schramm, U.; Grüner, F.; Habs, D.; Krausz, F.; Hooker, S. M.; Karsch, S.

Laser-driven, quasi-monoenergetic electron beams of up to ~200 MeV in energy have been observed from steady-state-flow gas cells. These beams emitted within a low-divergence cone of 2.1± 0.5 mrad FWHM display unprecedented shot-to-shot stability in energy (2.5% RMS), pointing (1.4 mrad RMS) and charge (16% RMS) owing to a highly reproducible gas-density profile within the interaction volume. Laser-wakefield acceleration in gas cells of this type provides a simple and reliable source of relativistic electrons potentially suitable for applications such as the production of XUV-undulator radiation.

Keywords: Stable electron acceleration in gas cells; relativistic laser plasma; PACS numbers: 52.38.Kd; 52.38.Hb; 41.75.Jv

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Publ.-Id: 11471