Generation of quasimonoenergetic electron bunches with 80-fs laser pulses

Hidding, B. and Amthor, K.-U. and Liesfeld, B. and Schwoerer, H. and Karsch, S. and Geissler, M. and Veisz, L. and Schmid, K. and Gallacher, J.G. and Jamison, S.P. and Jaroszynski, D. and Pretzler, G. and Sauerbrey, R. (2006) Generation of quasimonoenergetic electron bunches with 80-fs laser pulses. Physical review letters, 96 (10). ISSN 1079-7114

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Abstract

Highly collimated, quasimonoenergetic multi-MeV electron bunches were generated by the interaction of tightly focused, 80-fs laser pulses in a high-pressure gas jet. These monoenergetic bunches are characteristic of wakefield acceleration in the highly nonlinear wave breaking regime, which was previously thought to be accessible only by much shorter laser pulses in thinner plasmas. In our experiment, the initially long laser pulse was modified in underdense plasma to match the necessary conditions. This picture is confirmed by semianalytical scaling laws and 3D particle-in-cell simulations. Our results show that laser-plasma interaction can drive itself towards this type of laser wakefield acceleration even if the initial laser and plasma parameters are outside the required regime.

Item Type: Journal Article
Journal or Publication Title: Physical review letters
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 125943
Deposited By: ep_importer_pure
Deposited On: 18 Jun 2018 09:16
Refereed?: Yes
Published?: Published
Last Modified: 11 Feb 2020 04:20
URI: https://eprints.lancs.ac.uk/id/eprint/125943

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