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Permeation fill-tube design for inertial confinement fusion target capsules
- Part of
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- Journal:
- High Power Laser Science and Engineering / Volume 5 / 2017
- Published online by Cambridge University Press:
- 22 March 2017, e6
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- Article
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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-mm-diameter 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-
$\unicode[STIX]{x03BC}$m 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.
