| Recent models for light production in single bubble sonoluminescence predict maximum temperatures of 10{dollar}sp8{dollar}K. These models are also believed to be valid during extremely spherical cavitation events occurring during transient sonoluminescence. In this work first the issue of whether light production in agitated mercury is sonoluminescent in origin or due to an unrelated electrostatic phenomenon is examined. Next address the issue of whether the extremely high temperatures predicted by current models are actually achieved is addressed. At temperatures this high significant levels of fusion take place. Neutron production rates for both single bubble sonoluminescence in heavy water, and transient sonoluminescence of deuterium bubbles in liquid metals are examined. While there is no evidence of fusion, with this information an upper bound on the temperatures achieved is calculated. |
