Concomitance in single bubble sonoluminescence of period doubling in emission and shape distortion.
We report the first direct observation for a single stable sonoluminescing bubble of a shape instability. Furthermore we show that stable saturation of the shape distortion caused by the instability for a certain range of parameters is experimentally possible and furthermore is directly linked to the curious phenomenon of flash by flash period doubling of the sonoluminescent emission as the afterbounce instability causing the shape distortion is always period doubled whenever the emission is & vice versa.
BioComplexity Lab, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark. Electronic address: levinsen@nbi.dk.
Mogens T
MT
Levinsen
D003287:Contrast Media / Q000737:chemistry* / Q000528:radiation effects*; D019220:High-Energy Shock Waves; D008163:Luminescent Measurements / Q000379:methods*; D008422:Materials Testing; D045423:Microbubbles; D010316:Particle Size; D011829:Radiation Dosage; D014463:Ultrasonography / Q000379:methods*
D003287:Contrast Media
Afterbounce instability; Inertial confinement; Period doubling; Single bubble sonoluminescence; Sonoporation