Activity: Talk or presentation › Oral presentation
Sonoluminescence is the conversion of sound into light: A small gas bubble – usually filled with argon – is trapped in a standing acoustical wave and forced into radial oscillations. It undergoes a large expansion phase and then violently collapses down to its hardcore volume. In the final phase of this collapse the heat exchange with the surrounding liquid – usually water – becomes neglegible and the bubble is heated roughly adiabatically. By this means temperatures of up to 15000K, i.e., typical energies of a few eV, can be achieved: Consequently the bubble emits a short flash of light as bright as to be visible to the naked eye. The topic of this talk is an experimental and theoretical investigation on the possibility of enhancement of the phenomenon by lowering the frequency of the acoustical field – so called “Upscaling sonoluminescence”.
30 Mar 2001
DPG Frühjahrstagung 2001 Hamburg: (DPG Spring Meeting)