Fabrication of Pressurized 2 mm Beryllium Targets for ICF Experiments
| Autor: | E. H. Lundgren, Abbas Nikroo, A. C. Forsman, K. A. Moreno, M. Hoppe |
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| Rok vydání: | 2007 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Argon 020209 energy Mechanical Engineering Analytical chemistry chemistry.chemical_element 02 engineering and technology 01 natural sciences 010305 fluids & plasmas Nuclear Energy and Engineering chemistry Deuterium Sputtering Hohlraum 0103 physical sciences 0202 electrical engineering electronic engineering information engineering General Materials Science Neutron Beryllium Atomic physics Inertial confinement fusion Civil and Structural Engineering Laser drilling |
| Zdroj: | Fusion Science and Technology. 51:576-580 |
| ISSN: | 1943-7641 1536-1055 |
| DOI: | 10.13182/fst51-756 |
| Popis: | We have successfully fabricated 2 mm beryllium targets pressurized with a gas mixture of ~20 atm deuterium and ~0.1 atm argon. These targets have been used for indirect drive Inertial Confinement Fusion (ICF) experiments on the Z-pinch machine at Sandia National Laboratories leading to record neutron yields of ~3.5 × 1011 [J.E. Bailey, et al., “Be Capsule Implosions Driven by Dynamic Hohlraum X-rays,” Bull. Am. Phys. Soc. 51, 107 (2006)]. This paper will discuss the process of fabricating such targets from intact shells (Be sputter coated CH mandrels). These processes include laser drilling a ~6 μm diameter fill hole in a shell, removing the CH mandrel by pyrolysis, pressurizing the target with a deuterium/argon gas mixture and sealing the fill hole using UV glue while under pressure. The targets were characterized for gas pressure and deuterium gas permeation half-life by utilizing techniques including mass spectrometry, x-ray fluorescence spectroscopy and controlled shell bursting. |
| Databáze: | OpenAIRE |
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