WAVES IN ANISOTROPIC MEDIA.
Abstract
Theoretical studies have been directed towards understanding how factors sometimes discounted in simple models, such as temperature and collision effects, affect the propagation of waves in an anisotropic medium. The theoretical and computational work on dielectric loaded structures has yielded a method of calculating field and frequency of the lowest TM mode, from which the dispersion curve is easily obtained. Theoretical work on waves on electron beams has been confirmed by an experiment on a two beam vacuum tube. Microwave emission from a solid state plasma device has been observed. The effect of a standing microwave field pattern on the electron temperature in a plasma has been investigated and found to accord with the theory. Laser induced electron and ion emission has been observed from metal points and plane surfaces. The time delay between the laser pulse and onset of emission has been measured as less than 3.10 to the minus 8th power seconds. Stimulated emission has been observed in the ruby optical pumping experiment at 3 cm and 8 mm wavelengths.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 10, 1965
- Accession Number
- AD0652651
Entities
People
- Hans Motz
Organizations
- University of Oxford