Development of two mix model postprocessors for the investigation of shell mix in indirect drive implosion cores
- Department of Physics, University of Nevada, Reno, Nevada 89557 (United States)
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
- Prism Computational Sciences, Madison, Wisconsin 53703 (United States)
- Laboratory for Laser Energetics, Rochester, New York 14623 (United States)
The presence of shell mix in inertial confinement fusion implosion cores is an important characteristic. Mixing in this experimental regime is primarily due to hydrodynamic instabilities, such as Rayleigh-Taylor and Richtmyer-Meshkov, which can affect implosion dynamics. Two independent theoretical mix models, Youngs' model and the Haan saturation model, were used to estimate the level of Rayleigh-Taylor mixing in a series of indirect drive experiments. The models were used to predict the radial width of the region containing mixed fuel and shell materials. The results for Rayleigh-Taylor mixing provided by Youngs' model are considered to be a lower bound for the mix width, while those generated by Haan's model incorporate more experimental characteristics and consequently have larger mix widths. These results are compared with an independent experimental analysis, which infers a larger mix width based on all instabilities and effects captured in the experimental data.
- OSTI ID:
- 20975171
- Journal Information:
- Physics of Plasmas, Vol. 14, Issue 7; Other Information: DOI: 10.1063/1.2753471; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
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