ATTENUATION OF ULTRASONIC STRESS WAVES IN CADMIUM SULFIDE CRYSTALS,
Abstract
The velocity and attenuation of pulsed, ultra sonic stress waves in five cadmium sulfide crys tals, three of which were tap effect crystals, were measured at frequencies of 5 and 10 Mc, at temperatures of 77 K and 300 K. The velocity and attenuation measurements were taken while the crystal was irradiated with different, discrete, wavelength light in directions parallel to and perpendicular to the c-axis. The attenuation of the stress waves was proportional to the con ductivity when the stress waves were propagated parallel to the c-axis at 300 K. The attenuation was not a function of the conductivity when the stress waves were propagated perpendicular to the c-axis. The attenuation at 77 K was greater than the attenuation at room temperature. The 300 K attenuation results on all three tap effect crys tals were similar to the results that Truell and Nine obtained on their so-called type B cadmium sulfide crystals. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1963
- Accession Number
- AD0418558
Entities
People
- George Fred Heinrich
Organizations
- Air Force Institute of Technology