Measurements of magneto-Rayleigh-Taylor instability growth during the implosion of initially solid Al tubes driven by the 20-MA, 100-ns Z facility

The first controlled experiments measuring the growth of the magneto-Rayleigh-Taylor instability in fast (∼100  ns) Z-pinch plasmas are reported. Sinusoidal perturbations on the surface of an initially solid Al tube (liner) with wavelengths of 25-400  μm were used to seed the instability. Radiograph...

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Veröffentlicht in:Physical review letters 2010-10, Vol.105 (18), p.185001-185001, Article 185001
Hauptverfasser: Sinars, D B, Slutz, S A, Herrmann, M C, McBride, R D, Cuneo, M E, Peterson, K J, Vesey, R A, Nakhleh, C, Blue, B E, Killebrew, K, Schroen, D, Tomlinson, K, Edens, A D, Lopez, M R, Smith, I C, Shores, J, Bigman, V, Bennett, G R, Atherton, B W, Savage, M, Stygar, W A, Leifeste, G T, Porter, J L
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Sprache:eng
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Zusammenfassung:The first controlled experiments measuring the growth of the magneto-Rayleigh-Taylor instability in fast (∼100  ns) Z-pinch plasmas are reported. Sinusoidal perturbations on the surface of an initially solid Al tube (liner) with wavelengths of 25-400  μm were used to seed the instability. Radiographs with 15  μm resolution captured the evolution of the outer liner surface. Comparisons with numerical radiation magnetohydrodynamic simulations show remarkably good agreement down to 50  μm wavelengths.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.105.185001