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Information × Registration Number 0312U003088, 0106U011414 , R & D reports Title Collective phenomena and transport processes in plasmas of toroidal systems popup.stage_title Розвиток теорії мод енергійних іонів у стелараторах. Застосування теорії нестійкостей, що збуджуються енергійними іонами, для інтерпретації експериментів. Head Kolesnichenko Yaroslav, Доктор фізико-математичних наук Registration Date 09-02-2012 Organization Institute For Nuclear Research Of National Academy Of Sciences Of Ukraine popup.description2 It is shown that the plasma instabilities excited by energetic ions in tokamaks and stellarators can substantially affect to electron heat flows (but not particle flows) across the magnetic field. The new mechanism of the temporal evolution of the oscillation frequency in plasma - the Doppler shift variation arising from the change of the plasma rotation frequency during the instability development - was discovered. The possibility was demonstrated to diagnose of fast ions in present-day and future tokamaks by means of analysis of the gamma radiation caused by nuclear reactions of these ions with plasma impurity ions. The study of the redistribution of the injected fast ions during sawtooth oscillations in the tokamak DIII-D (USA) was initiated. The equation for the description of drift-sound eigenmodes (DSE) and drift-Alfven eigenmodes (DAE) was generalized to the case of the arbitrary ratio between the frequency of the geodesic acoustic mode and the drift frequency with the plasma temperature inhomogeneity taken into account. A study of the so-called "high-energy feature" (HEF) - the formation of the bump on the beam distribution function during the excitation of high-frequency Alfven instabilities - was initiated. The nonlinear equations similar to the reduced MHD equations were derived for studying the properties of Alfven eigenmodes with finite amplitudes, in particular, the NGAE modes. Calculations of the efficiency of the current generation by the injected ions in the tokamak ITER were carried out, based on the three-dimensional Fokker-Planck equation in the space of the invariants of motion. The effect of the ripple of toroidal magnetic field on the losses of the charged products of DD-fusion in JET was investigated. The toroidal precession of circulating particles was investigated with the use of both analytical and numerical methods. The precession frequency was calculated for the general case - non-circular tokamaks with shear. Product Description popup.authors Бурдо Олег Семенович Голобородько Віктор Ярославович Кириця Володимир Леонідович Колесниченко Ярослав Іванович Лепявко Борис Сергійович Луценко Вадим Васильович Марченко Віктор Станіславович Резник Святослав Миколайович Тихий Антон Володимирович Тищенко Маргарита Германівна Фесенюк Олександр Петрович Яворський Віктор Олександрович Яковенко Юрій Володимирович popup.nrat_date 2020-04-02 Close