Enhanced relativistic-electron-beam energy loss in warm dense aluminum

Vaisseau, X. and Debayle, A. and Honrubia, J. J. and Hulin, S. and Morace, A and Nicolai, Ph. and Sawada, H. and Vauzour, B. and Batani, D. and Beg, F. N. and Davies, J. R. and Fedosejevs, R and Gray, R. J. and Kemp, G E and Kerr, S and Li, K and Link, A and McKenna, P. and McLean, H S and Mo, M and Neely, David and Patel, P K and Park, J and Peebles, J and Rhee, Y J and Sorokovikova, A and Tikhonchuk, V. T. and Volpe, L. and Wei, M and Santos, J. J. (2015) Enhanced relativistic-electron-beam energy loss in warm dense aluminum. Physical Review Letters. 095004. ISSN 1079-7114 (https://doi.org/10.1103/PhysRevLett.114.095004)

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Energy loss of relativistic electron beams in warm-dense aluminum is measured in the regime of ultra-high electron beam current density over 2x10^11 A/cm2 (time-averaged). The samples are heated by shock compression. Comparing to undriven cold-solid ones, the roles of the different initial resistivity and of the transient resistivity (upon target heating during electron transport) are directly highlighted by the experimental data, reproduced by a comprehensive set of simulations, describing the hydrodynamics of the shock compression, and electron beam generation and transport. We measured a 16% increase in electron resistive energy loss in warm-dense compared to cold-solid samples of identical areal mass.