We show by numerical hydrodynamic calculations that there are two important effects of thermal conduction in sonoluminescence: (i) the bubble remains close to being isothermal during the expansion phase; and (ii) a cold, dense layer of air is formed at the bubble wall during the contraction phase. These conclusions are not sensitive to the particular equation of state used, although details of ...

The widening phenomenology of Single Bubble Sonoluminescence (SBSL), that is challenging generally accepted theory, is shown to be in good agreement with a new approach to condensed matter, based on the QED coherent interactions. The remarkable properties of SBSL are shown to emerge from the electromagnetic release of part of the latent heat of the water's vapour-liquid phase transition occurri...

An experimental search for nuclear fusion inside imploding bubbles of degassed deuterated acetone at 0 degrees C driven by a 15 atm sound field and seeded with a neutron generator reveals an upper bound that is a factor of 10 000 less than the signal reported by Taleyarkhan et al. The strength of our upper bound is limited by the weakness of sonoluminescence, which we ascribe to the relatively ...

It has been shown by Liberati et al. [Phys. Rev. D 61, 85023 (2000)] that a dielectric medium with a time-dependent refractive index may produce photons. We point out that a free electric charge that interacts with such a medium will emit quantum-mechanically modified transition radiation in which an arbitrary odd number of photons will be present. Excited atomic electrons will also exhibit a s...

In sonoluminescence sound waves in the fluid are converted into UV-photons. In this letter we put forward a mechanism based on superradiance that operates this conversion. The predicted energies of emitted light turns out to lie in the range of 1-10 eV, in good agreement with experiment. Furthermore our paradigm hints why the effect hinges so crucially on the cavitation of a noble gas

The dramatic rise in height of the meniscus within a capillary, the other end of which is immersed in a liquid undergoing ultrasonic cavitation, represents a novel, robust and inexpensive method for monitoring cavitational activity. Here this effect is compared quantitatively with the multibubble sonoluminescence, which is simultaneously being emitted by the sample. A comparison is made of both...