FIELD: electronic devices. SUBSTANCE: conditions are created for electron beam whose cross dimensions are much greater than wavelength not only to excite but also to shape transverse spatial structure and, if necessary, longitudinal spatial structure of only one working mode or one working wave. Depending on particular conditions, electron beam as irregular dielectric medium may cause both focusing and defocusing of electromagnetic waves. This may cause formation and excitation of steady electromagnetic field structures in electron beam transport channel. EFFECT: improved power capacity of device. 2 dwg
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Authors
Dates
1995-08-20—Published
1988-11-29—Filed