Perturbation of Microwave Cavities by Lossy Dielectrics and Plasmas
- 1 January 1969
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 40 (1) , 30-36
- https://doi.org/10.1063/1.1657048
Abstract
The frequency shift and Q change of a microwave cavity caused by lossy dielectrics or plasma spheres or cylinders is calculated. The necessity for this analysis is prompted by the use of microwave cavities to measure the expansion of nearly spherical plasmas created by focused high‐power lasers. The conditions required for the perturbing volume to behave as if it were a perfect conductor are examined. It is found that much lower conductivities (or permittivities) are required when the perturbing volume is placed in a cavity region where electric energy is predominant.This publication has 1 reference indexed in Scilit:
- Electromagnetic Scattering by Finite Dense PlasmasJournal of Applied Physics, 1965