Abstract
We report experimental evidence for coherent backscattering of waves in a three-dimensional elastic body. Ultrasonic spectral energy density consequent to a transient excitation is measured as a function of time and of distance from the source. In accord with the predictions of random matrix theory, an enhancement is found near the source by a weak localization factor of 2 at early times, but a factor of 3 at late times. The effect appears to be independent of absorption.
Original language | English (US) |
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Pages (from-to) | 4942-4945 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 84 |
Issue number | 21 |
DOIs | |
State | Published - 2000 |
ASJC Scopus subject areas
- General Physics and Astronomy