Mesoscopic phase statistics of diffuse ultrasound in dynamic matter
M L Cowan1, D Anache-Ménier, W K Hildebrand
1Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba, Canada.
Physical Review Letters
|October 13, 2007
Abstract:
Temporal fluctuations in the phase of waves transmitted through a dynamic, strongly scattering, mesoscopic sample are investigated using ultrasonic waves, and compared with theoretical predictions based on circular Gaussian statistics. The fundamental role of phase in diffusing acoustic wave spectroscopy is revealed, and phase statistics are also shown to provide a sensitive and accurate way to probe scatterer motions at both short and long time scales.
