TY - JOUR
T1 - Coda-Wave Interferometry in Finite Solids
T2 - Recovery of [Formula presented]-to-[Formula presented] Conversion Rates in an Elastodynamic Billiard
AU - Lobkis, Oleg I.
AU - Weaver, Richard L.
PY - 2003
Y1 - 2003
N2 - We study the temperature dependence of diffuse reverberant ultrasound in elastic bodies. Transient wave forms are found to undergo an almost pure dilation of 0.0277% per degree, related to the temperature dependence of wave speeds. The wave forms also suffer a distortion that, we argue, depends on the rate of conversion between the dilatational ([Formula presented]) and shear ([Formula presented]) waves. Distortion is found to scale in a manner consistent with theoretical arguments but also appears to be a function of the degree of ray chaos in the body, indicating that the mixing rates are slower in more regular bodies.
AB - We study the temperature dependence of diffuse reverberant ultrasound in elastic bodies. Transient wave forms are found to undergo an almost pure dilation of 0.0277% per degree, related to the temperature dependence of wave speeds. The wave forms also suffer a distortion that, we argue, depends on the rate of conversion between the dilatational ([Formula presented]) and shear ([Formula presented]) waves. Distortion is found to scale in a manner consistent with theoretical arguments but also appears to be a function of the degree of ray chaos in the body, indicating that the mixing rates are slower in more regular bodies.
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U2 - 10.1103/PhysRevLett.90.254302
DO - 10.1103/PhysRevLett.90.254302
M3 - Article
C2 - 12857137
AN - SCOPUS:84866716074
SN - 0031-9007
VL - 90
JO - Physical Review Letters
JF - Physical Review Letters
IS - 25
ER -