Modelling hot electron generation in short pulse target heating experiments
1 AWE, Aldermaston, Reading, Berkshire RG7 4PR, UK
2 Centre for Fusion Space and Astrophysics, University of Warwick, Coventry CV4 7AL, UK
Published online: 15 November 2013
Target heating experiments planned for the Orion laser facility, and electron beam driven fast ignition schemes, rely on the interaction of a short pulse high intensity laser with dense material to generate a flux of energetic electrons. It is essential that the characteristics of this electron source are well known in order to inform transport models in radiation hydrodynamics codes and allow effective evaluation of experimental results and forward modelling of future campaigns. We present results obtained with the particle in cell (PIC) code EPOCH for realistic target and laser parameters, including first and second harmonic light. The hot electron distributions are characterised and their implications for onward transport and target heating are considered with the aid of the Monte-Carlo transport code THOR.
© Owned by the authors, published by EDP Sciences, 2013
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