Two-Dimensional Simulation of Fluid Instability in Laser-Fusion Pellets
- 19 May 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 34 (20) , 1273-1276
- https://doi.org/10.1103/physrevlett.34.1273
Abstract
Two-dimensional numerical-simulation techniques have been used to study fluid instability in laser-fusion pellets. Comparisons with analytic solutions in nonablating test cases show good agreement. Isentropic ablative accelerations exhibit growth rates 50%-100% of Rayleigh-Taylor values, while nonisentropic cases show suppressed growth. Design optimization has led to an impulsively accelerated, low-aspect-ratio shell which operates successfully with a surface perturbation of a few tens of angstroms.Keywords
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