GeV-scale electron acceleration in a gas-filled capillary discharge waveguide

Details GeV-scale electron acceleration in a gas-filled capillary discharge waveguide GeV-scale electron acceleration in a gas-filled capillary discharge waveguide

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007njph....9..415k&link_type=abstract

New Journal of Physics, Volume 9, Issue 11, pp. 415 (2007).

Physics

48

Scientific paper

We 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.

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