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DY: Fachverband Dynamik und Statistische Physik

DY 5: Fluid dynamics I

DY 5.7: Vortrag

Montag, 26. März 2007, 15:45–16:00, H2

On the nonlinear dynamics of a sonoluminescing bubble — •Joachim Holzfuss — Institut für Angewandte Physik, TU Darmstadt, Schlo8gartenstr. 7, 64289 Darmstadt

A bubble in water is driven by ultrasound. In a small parameter region strong nonlinear oscillations are observed that give rise to the emission of ultrashort light pulses, termed sonoluminescence (SBSL). The parameter space is bounded by several instability mechanisms which are discussed in detail. Recent results including period doubled unisotropic emissions, rescaling of stability boundaries and nobel gas - free stable SBSL are reported.