Alternative method to deduce bubble dynamics in single-bubble sonoluminescence experiments

Abstract

In this paper we present an experimental approach that allows to deduce the important dynamical parameters of single sonoluminescing bubbles (pressure amplitude, ambient radius, radius-time curve) The technique is based on a few previously confirmed theoretical assumptions and requires the knowledge of quantities such as the amplitude of the electric excitation and the phase of the flashes in the acoustic period. These quantities are easily measurable by a digital oscilloscope, avoiding the cost of expensive lasers, or ultrafast cameras of previous methods. We show the technique on a particular example and compare the results with conventional Mie scattering. We find that within the experimental uncertainties these two techniques provide similar results.

Stable Single-Bubble Sonoluminescence without the presence of noble gases

“…The concentration c ∞ = 0.20, while the working temperature is 9 • C. The apparent noise in the relative phase of ∼ 50 ns is mostly due to the discreteness of the sampling while no apparent trend away from the mean is observable. As mentioned before this translates into a stable value of the characteristic bubble parameter R 0 [8]. (The digital resolution that translate into approximately 12.5 ns can be seen in this graph.…”

Ultrasonic measurements of spherical resonator characteristics and determination their errors

“…The study of single bubble sonoluminscence is motivated by the fact that through it one can study physical process and the properties of matter at extreme conditions of high density, pressure, and temperature [6]. The dynamics of the bubble wall ( ) t R can be described by the Rayleigh-Plesset equation…”

“…The gas pressure g P can be related to ( ) t R through equation of state (a polytropic van der Waals equation of state is used in [6] ).…”

Second Mode of Recycling together with Period Doubling Links Single-Bubble and Multibubble Sonoluminescence

“…The timing of the flash relative to the phase of the sound field (denoted relative phase) has been shown in the stable case to be related monotonically to the size of the bubble [11,12]. Since the time scale of the recycling is much longer than the cycle of the sound, it is fair to assume the bubble to be in a semistable equilibrium state, where a similar relation between size and relative phase holds.…”