Date of Award
3-1979
Degree Type
Thesis
Degree Name
Master of Science (MS)
Department
Physics
Supervisor
Professor D. Walton
Abstract
The attenuation of thermal phonons and acoustically generated phonons at different power levels are compared in α-quartz. The average attenuation at 1.67 GHz at room temperature was 27.3 db/cm ± 2.7% and at a frequency of 1.856 GHz, it was 32.5 db/cm ± 2.1%. Woodruff and Ehrenreich's theory was used to calculate the lifetime of thermal phonons from acoustic attenuation data. The relaxation time for thermal phonons at 300ºK was found to be 8.34x10‾¹² sec.
Recommended Citation
Kochhar, Ashok K., "The Lifetime of Thermal Phonons in α-Quartz" (1979). Open Access Dissertations and Theses. Paper 317.
http://digitalcommons.mcmaster.ca/opendissertations/317