Grigoryan, Levon Sh. and Khachatryan, H. F. and Arzumanyan, S. R. (2011) Self-amplified Cherenkov radiation from relativistic particles in layered dielectric-filled waveguide. Il nuovo cimento C, 34 (4). pp. 317-325. ISSN 1826-9885
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Abstract
The radiation from a charged particle uniformly moving along the axis of cylindrical waveguide filled with semi-infinite layered dielectric material that weakly absorbs the radiation is investigated. Expressions for calculation of the spectral distribution of the total energy of radiation passing through the transverse section of a waveguide at large distances from the boundary of a layered medium are derived with no limitations on the amplitude and variation profile of the layered medium permittivity. The results of numerical calculations for emission of Cherenkov radiation (CR) in the layered material consisting of dielectric plates alternated with vacuum gaps are given. It is shown that in some special cases CR from a relativistic particle-in-flight from the layered medium to the vacuum at a single waveguide mode may prove to be many times as strong as CR in the waveguide filled with semi-infinite solid dielectric without vacuum gaps. The visual explanation of this effect is given and a possible application is discussed.
| Item Type: | Article |
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| Uncontrolled Keywords: | Electron and positron radiation effects ; Cherenkov radiation ; Infrared, submillimeter wave, microwave, and radiowave sources |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 07 Apr 2020 19:57 |
| Last Modified: | 07 Apr 2020 19:57 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17352 |
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