Darmstadt, 24.01.2009

Surface Wave Instabilities paper published in Phys. Rev. E

Period Doubling, Approximate Universal Boundary of Stability found

Abstract: Numerical results are presented for hydrodynamic instabilities surrounding the parameter space of sonoluminescing bubbles. The Rayleigh-Taylor instability is shown to limit bubble oscillations only at a small region near a border at small radii in noisy environments. Also, two different noise induced instabilities by secondary collapses are identified. A reason for period doubled, anisotropic emission is found to be due to coupling of radial and surface oscillations. Furthermore an approximate universal border is shown to exist above which the bubble is destroyed by the parametric instability. The results are compared to experimental results from several publications using different experimental setups.

Published in: Phys. Rev. E 77, 066309 (2008) (Opens external link in new windowdoi)

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Dr. Joachim Holzfuss

Nichtlineare Physik
Institut für Angewandte Physik
Fachbereich 05 - Physik
Technische Universität Darmstadt
Schlossgartenstr. 7
D-64289 Darmstadt

+49 6151 16-2884

+49 6151 16-4534

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