Foam-buffered spherical implosions at 527 nm
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
- University of Rochester, Laboratory for Laser Energetics, Rochester, New York 14627 (United States)
- Imperial College of Science and Technology, London (United Kingdom)
Creation of a low density, high temperature plasma buffer between the absorption and ablation layers of a directly driven inertial confinement fusion implosion capsule has been proposed as a means to reduce {open_quotes}early time{close_quotes} imprint from laser nonuniformities. This thermal smoothing blanket might be created from a low density foam layer wrapped around the deuterium{endash}tritium filled microballoon. Preliminary spherical implosion tests of this concept using a polystyrene foam layer surrounding a glass microballoon were performed at the Nova laser [Rev. Sci. Instrum. {bold 57}, 2101 (1986)], using a 527 nm drive wavelength. Comparison of capsule yield and imploded core symmetry showed promising improvements in overall target performance, relative to one-dimensional undegraded hydrodynamic simulations, when the foam-buffer layer was present. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 544570
- Journal Information:
- Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 5 Vol. 4; ISSN PHPAEN; ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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Thu Aug 16 20:00:00 EDT 2018
· Physics of Plasmas
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OSTI ID:1465792