Measurement of radiation-driven shock-induced mixing from nonlinear initial perturbations
Journal Article
·
· Physical Review Letters
- Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
We present the first experimental measurement of the growth of a mixing region at a density interface from a high-amplitude, initially nonlinear perturbation. Thermal radiation from a gold {ital Hohlraum} irradiated by the Nova laser was used to drive a shock across a perturbed plastic-foam interface in a cylindrical shock tube attached to the {ital Hohlraum}. When the effects of target decompression are removed, the width of the mix region was found to grow logarithmically with time---in agreement with recent theories for the nonlinear phase of the Richtmyer-Meshkov instability.
- Research Organization:
- Lawrence Livermore National Laboratory
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 239432
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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