Cerenkov and transition radiation in space‐time periodic media
- Creators
- Elachi, Charles
Abstract
The solution to the problem of determining the radiation emitted by a uniformly moving charged particle in a sinusoidally space‐time periodic medium is obtained. The space‐time periodicity can be considered as due to a strong pump wave and is expressed as a traveling‐wave‐type change in the dielectric constant or the plasma density. The solution covers also the limiting case of sinusoidally stratified media. The expression and spectrum of the radiated electromagnetic field are determined for different media: dielectric, isotropic and uniaxial plasma. Depending on the nature of the medium and the velocity of the particle, the radiated field is of the Cerenkov and∕or transition type. The Brillouin diagram is used extensively in understanding and determining the nature, extent, and spectrum of the different modes of radiation, and a focusing effect is also studied.
Additional Information
© 1972 American Institute of Physics. Received 17 March 1972. The author deeply thanks Professor C. H. Papas for many helpful discussions during this study. This paper presents the results of one phase of research carried out at the Jet Propulsion Laboratory, California Institute of Technology, under Contract No. NAS7-100 sponsored by the National Aeronautics and Space Administration, and at the California Institute of Technology, under Air Force Grant AFOSR-68-1400.Attached Files
Published - ELAjap72.pdf
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Additional details
- Eprint ID
- 32804
- Resolver ID
- CaltechAUTHORS:20120731-075113911
- NAS7-100
- NASA
- AFOSR-68-1400
- Air Force Office of Scientific Research (AFOSR)
- Created
-
2012-07-31Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences