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Permeation fill-tube design for inertial confinement fusion target capsules

  • B.S. Rice (a1), J. Ulreich (a2), C. Fella (a2), J. Crippen (a3), P. Fitzsimmons (a3) and A. Nikroo (a4)...
Abstract

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.

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Copyright
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Corresponding author
Correspondence to:  Brian S. Rice, Mechanical Engineering Technology, Rochester Institute of Technology, 78 Lomb Memorial Drive, Rochester NY 14623-5604, USA. Email: bsrbmea@rit.edu
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High Power Laser Science and Engineering
  • ISSN: 2095-4719
  • EISSN: 2052-3289
  • URL: /core/journals/high-power-laser-science-and-engineering
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