title: Saturation of shape instabilities in single-bubble sonoluminescence.
abstract: Excitation of shape instabilities represents one route to bubble death in single-bubble sonoluminescence. This feature is satisfactorily explained by an expansion to first order in the amplitude of a shape distortion in the form of a spherical harmonic. By taking the expansion to second order, it is found that regions of parameter space exist where the exponential growth into bubble disruption is checked and a saturated stable state of shape distortion is possible. Experimental evidence provided by Mie scattering is presented, and a possible connection to simultaneous spatially anisotropic light emission is discussed.
authors.affiliation: Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
authors.forename: Mogens T
authors.initials: MT
authors.lastname: Levinsen
mesh_terms: D049449:Luminescence; D008962:Models, Theoretical; D013016:Sound