WAVEGUIDE ANALOGIES OF SCATTERING AND PROPAGATION IN INHOMOGENEOUS PLASMA.
Abstract
The conditions under which dominant mode propagation in a lossless tapered waveguide may serve as an analogue of plane-wave propagation in a lossless inhomogeneous plasma are found. These conditions are relatively mild, thereby permitting a suitably tapered waveguide to be used as an analogue computer for the determination of both field distributions and the reflection and transmission coefficients for plasma distributions having fairly rbitrary density profiles. The analogy is demonstrated by an experimental determination of the reflection coefficient for a linear plasma profile. Analogies based on the use of an inhomogeneous dielectric in a uniform waveguide are discussed briefly. It is found that such analogies are suitable for measurements only at a single frequency and are therefore of limited practical utility. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1964
- Accession Number
- AD0606981
Entities
People
- Leonard G. Cohen
- Lewis Wetzel
Organizations
- Brown University