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Cerenkov radiation from a slow, relativistic electron moving uniformly through microwave ferrite
Author(s) -
Mueller R. S.
Publication year - 1992
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/92rs01011
Subject(s) - superluminal motion , physics , cherenkov radiation , microwave , electromagnetic radiation , radiation , electron , ferrite (magnet) , optics , computational physics , quantum electrodynamics , astrophysics , quantum mechanics , detector
The electromagnetic fields generated by a superluminal electron in longitudinally magnetized, microwave ferrite have been derived for a narrow band of frequencies in the X band. For a superluminal electron, Cerenkov radiation is emitted in two circular cones for the ordinary and extraordinary wave modes. Using a Huygens' construction of wavelets, conditions for Cerenkov radiation were related to the propagation of plane waves through the ferrite. It was found that a slow relativistic electron will radiate only in the extraordinary wave mode. It is too slow to generate radiation in the ordinary wave mode.