Fast electrons produced by a 10 ps, 160 J laser pulse through laser-compressed plastic cylinders are studied experimentally and numerically in the context of fast ignition. K(alpha)-emission images reveal a collimated or scattered electron beam depending on the initial density and the compression timing. A numerical transport model shows that implosion-driven electrical resistivity gradients induce strong magnetic fields able to guide the electrons. The good agreement with measured beam sizes provides the first experimental evidence for fast-electron magnetic collimation in laser-compressed matter
Pérez, F., Debayle, A., Honrubia, J., Koenig, M., Batani, D., Baton, S., et al. (2011). Magnetically-guided fast electrons in cylindrically-compressed matter. PHYSICAL REVIEW LETTERS, 107(6) [10.1103/PhysRevLett.107.065004].
Magnetically-guided fast electrons in cylindrically-compressed matter
BATANI, DINO DIMITRI;JAFER, RASHIDA;VOLPE, LUCA
2011
Abstract
Fast electrons produced by a 10 ps, 160 J laser pulse through laser-compressed plastic cylinders are studied experimentally and numerically in the context of fast ignition. K(alpha)-emission images reveal a collimated or scattered electron beam depending on the initial density and the compression timing. A numerical transport model shows that implosion-driven electrical resistivity gradients induce strong magnetic fields able to guide the electrons. The good agreement with measured beam sizes provides the first experimental evidence for fast-electron magnetic collimation in laser-compressed matter
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