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Information × Registration Number 0216U006949, 0114U003770 , R & D reports Title Plural resonant interactions in plasma-beam superheterodyne free electron lasers popup.stage_title Head Lysenko Oleksandr Volodymyrovych, Доктор фізико-математичних наук Registration Date 02-08-2016 Organization Sumy State University popup.description2 Purpose of work - the establishment of basic physical laws of nonlinear processes in plasma-beam superheterodyne FELs. The methods of research - the hierarchic approach to the theory of oscillations and waves was used as the basic mathematical apparatus for theoretical research of nonlinear processes in SFELs. The modernization of averaged characteristics method was conducted in the part of the development of asymptotic integration schemes that combine direct and reverse transitions. We have developed multiharmonic cubic-nonlinear theory of plasma-beam superheterodyne free-electron lasers dopplertron and H-ubitron types with helical electron beams. The saturation levels and mechanisms have been found for the non-axial injection electron beam. We have found the optimal operating modes of plasma-beam superheterodyne FEL in which it is possible the formation of powerful electromagnetic radiation. Product Description popup.authors Биченко Глеб Вітальйович Волк Юрій Юрьйович Коваль Віталій Вікторович Колоскова Олександра Артемівна Олексієнко Галина Андріївна Ромбовський Михайло Юрьйович popup.nrat_date 2020-04-02 Close