S Karsch et al 2007 New J. Phys. 9 415 doi:10.1088/1367-2630/9/11/415
GeV-scale electron acceleration in a gas-filled capillary discharge waveguide
S Karsch1,6, J Osterhoff1, A Popp1, T P Rowlands-Rees2, Zs Major1, M Fuchs1,3, B Marx1,3, R Hörlein1,3, K Schmid1,3, L Veisz1, S Becker3, U Schramm4, B Hidding5, G Pretzler5, D Habs3, F Grüner1, F Krausz1,3 and S M Hooker2
Show affiliationsWe report experimental results on laser-driven electron acceleration with low divergence. The electron beam was generated by focussing 750 mJ, 42 fs laser pulses into a gas-filled capillary discharge waveguide at electron densities in the range between 1018 and 1019 cm−3. Quasi-monoenergetic electron bunches with energies as high as 500 MeV have been detected, with features reaching up to 1 GeV, albeit with large shot-to-shot fluctuations. A more stable regime with higher bunch charge (20–45 pC) and less energy (200–300 MeV) could also be observed. The beam divergence and the pointing stability are around or below 1 mrad and 8 mrad, respectively. These findings are consistent with self-injection of electrons into a breaking plasma wave.
- PACS
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52.38.Kd Laser-plasma acceleration of electrons and ions
41.75.Fr Electron and positron beams
52.40.Fd Plasma interactions with antennas; plasma-filled waveguides
- Subjects
- Dates
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Issue 11 (November 2007)
Received 14 September 2007
Published 23 November 2007
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GeV-scale electron acceleration in a gas-filled capillary discharge waveguide
S Karsch et al 2007 New J. Phys. 9 415
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