Abstract
Two-dimensional coupled Fokker-Planck and radiation-hydro simulations showed that for efficient ion heating in FIREX-I class small-sized DT cores (ρR ∼ 0.2g/cm2), because of short confinement time, short duration and low temperature fast electron beam is required compared with high-gain class targets. In the case of fast electron beam with the energy of 4kJ, duration of 5ps, slop temperature of 0.5MeV and the intensity of 1.1×1020W/cm2, the energy coupling from fast electron beam to dense core of 49%, heated bulk electron and ion temperatures of 8.0keV and 4.6keV and neutron yield of 1.1×1014 are obtained. The fuel material dependence of heating properties are also discussed.
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