Darmstadt, 25.02.2009

Chemical oscillations of driven, air-seeded bubbles published

Very low frequency modulations found, published as Rapid Communication in PRE.

Abstract: Chemical oscillations are shown to be responsible for very low frequency modulations of a bubble oscillating nonlinearly in a high intensity ultrasound field. In the parameter space of incomplete dissociation near the onset of sonoluminescence a small bubble is shown to grow on a long time scale by the intake of dissolved air. Bubble collapses get hotter and more dense, noninert gases are dissociated and removed, and a small growing argon bubble is left behind continuing the circle.

Published in: Phys. Rev. E 78, 025303(R) (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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