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Title Influence of helical electron beams on dynamics of waves in plasma-beam SFEL of dopplertron type
Authors Oleksiienko, G.A.
Keywords dynamics of waves
динаміка хвиль
динамика волн
helical electron beams
гвинтові електронні пучки
винтовые электронные пучки
Type Conference Papers
Date of Issue 2015
URI http://essuir.sumdu.edu.ua/handle/123456789/40619
Publisher Sumy State University
License
Citation Oleksiienko, G.A. Influence of helical electron beams on dynamics of waves in plasma-beam SFEL of dopplertron type [Текст] / G.A. Oleksiienko; EL adviser A.M.Diadechko // Соціально-гуманітарні аспекти розвитку сучасного суспільства : матеріали Всеукраїнської наукової конференції викладачів, аспірантів, співробітників та студентів, м. Суми, 23-24 квітня 2015 року. - Суми : СумДУ, 2015. - С. 299.
Abstract To investigate the device which is capable of generate and amplify a coherent electromagnetic radiation in the millimeter and submillimeter wavelength ranges is extremely important today. In the research under discussion the model of a plasma-beam superheterodyne free electron laser (SFEL) is the following. Plasma is located in the longitudinal focusing magnetic field with strength H0. Relativistic electron beam is injected into this plasma environment at an angle α with respect to the magnetic field strength vector. We chose a circularly polarized intense low-frequency electromagnetic wave as a pump. This wave propagates along the guiding magnetic field and in the opposite direction to the electron beam. Also we feed a weak high-frequency circularly polarized electromagnetic wave (signal wave) into the system. The direction of the wave signal may be different, so the wave number can either positive or negative. The parametric resonance between the signal wave and the pump wave results in excitation of a space-charge wave (SCW).
Appears in Collections: Наукові видання (ІФСК)

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