INVESTIGATION OF THE ULTRASONIC ATTENUATION IN IRRADIATED METALS.
Abstract
Measurements of the ultrasonic attenuation of phonons in samples of pure copper and aluminum were undertaken to determine the effects of gamma irradiation on the electron-phonon interaction and the phonon-dislocation interaction in normal metals. From these measurements the absolute electronic attenuation was determined, as well as the temperature dependence of the electron mean free path at low temperatures. The measurements revealed that the ultrasonic attenuation in copper is orientation-dependent, and that the attenuation in aluminum is orientation-independent. The electron-phonon interaction in copper is orientation-dependent; the electron-phonon attenuation in aluminum is orientation-independent. The dislocation-phonon interaction in copper is also orientation-dependent, whereas in aluminum no dislocation-phonon interaction was detected. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 15, 1967
- Accession Number
- AD0662870
Entities
People
- Edward Y. Wang
- Kathryn A. Mccarthy
- Robert J. Kolouch
Organizations
- Tufts University