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We present the results of two similar experiments on laser generated relativistic electron beam (REB) transport in aluminum samples related to the fast ignition (FI) of inertially confined fusion targets. Their goal was to characterize high current density REB energy losses in solid and compressed samples, as the viability of the FI scheme is highly determined by the amount of such energy losses....
The high current electron beam losses have been studied experimentally with 0.7 J, 40 fs, 6 1019 Wcm-2 laser pulses interacting with Al foils of thicknesses 10-200 μm. The fast electron beam characteristics and the foil temperature were measured by recording the intensity of the electromagnetic emission from the foils rear side at two different wavelengths in the optical domain, ≈407 nm (the second...
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