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Open Access research with a European policy impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the European Policies Research Centre (EPRC).

EPRC is a leading institute in Europe for comparative research on public policy, with a particular focus on regional development policies. Spanning 30 European countries, EPRC research programmes have a strong emphasis on applied research and knowledge exchange, including the provision of policy advice to EU institutions and national and sub-national government authorities throughout Europe.

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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). pp. 105004-1. ISSN 0031-9007

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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.