Abstract
By means of movable beams of coherent pulsed phonons it is possible to record multiple-beam interferences in wedge-shaped evaporated films as a function of thickness. By fitting calculated interferograms to these phonon interferograms the attenuation and phase velocity of longitudinal and transverse hypersound can be determined for these films. Details of the experimental setup used at 1 GHz, 3 GHz, 9 GHz and 24 GHz as well as the preparation of wedge-shaped metals films are described, too.
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