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A unique approach for permeation filling of nonpermeable inertial confinement fusion target capsules with deuterium–tritium(DT) is presented. This process uses a permeable capsule coupled into the final target capsule with a 0.03-mmdiameter fill tube. Leak free permeation filling of glow-discharge polymerization(GDP) targets using this method have been successfully demonstrated, as well as ice layering of the target, yielding an inner ice surface roughness of 1-μm rms(root mean square). Finally, the measured DT ice-thickness profile for this experiment was used to validate a thermal model’s prediction of the same thickness profile.
A unique approach for permeation filling of nonpermeable inertial confinement fusion target capsules with deuterium-tritium (DT) is presented. This process uses a permeable capsule coupled into a final target capsule with a 0.03-mmdiameter fill tube. Leak free permeation filling of glow- discharge polymerization (GDP) targets using this method have been successfully demonstrated, as well as ice layering of the target, yielding an inner ice surface roughness of 1-μm rms (root mean square). Finally, this experiment was used to validate a thermal model’s prediction of the same thickness profile.