Perturbations of Microwave Cavity Fields by Time‐Varying Xenon Laser Discharges
| Autor: | L. A. Weaver, R. J. Freiberg |
|---|---|
| Rok vydání: | 1968 |
| Předmět: |
Electron density
Chemistry Analytical chemistry Physics::Optics General Physics and Astronomy chemistry.chemical_element Field strength Laser law.invention Xenon Collision frequency law Physics::Accelerator Physics sense organs Atomic physics skin and connective tissue diseases Microwave Microwave cavity Power density |
| Zdroj: | Journal of Applied Physics. 39:1550-1556 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.1656393 |
| Popis: | The effects of a time‐varying complex dielectric constant upon the resonant characteristics of a cylindrical microwave cavity are presented. The cavity resonance equations are developed to consider the influence of small periodic changes in resonant frequency, bandwidth, and cavity‐coupling coefficient upon the microwave power density within the cavity as a function of the probing microwave frequency. Expressions are derived which enable the separate contributions of periodic changes in cavity power density to be extracted from measurements at several microwave frequencies. It is shown that for high‐Q cavities, variations in the sampled microwave cavity fields are due predominantly to shifts in the cavity resonant frequency. By repetitively interrupting the mirror cavity of a 3.51‐μ xenon laser with a mechanical chopping wheel, very small periodic changes are induced in the electron density and collision frequency of the xenon dc discharge due to changes in the laser field strength. The resultant changes ... |
| Databáze: | OpenAIRE |
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