Search academic texts

Information × Registration Number 0222U003313, 0116U002923 , R & D reports Title Multiparticle processes in nuclear fusion systems popup.stage_title Head Kolesnychenko Yaroslav I., Доктор фізико-математичних наук Registration Date 05-03-2022 Organization Institute of Nuclear Research of the National Academy of Sciences of Ukraine popup.description2  It is shown that under certain conditions the inhomogeneity of the plasma temperature distribution can lead to such instability of the plasma that it does not worsen but improves its energy confinement. There was considered the collisionless stochastic diffusion of energy ions in optimized Wendelstein-type stellarators, the existence of which in these devices was predicted in Beidler, Kolesnichenko, Marchenko et al., 2001 Phys. Plasmas 8, p. 2731. The combined effect of plasma pressure gradient and radial electric drift induced by horizontal plasma polarization when heated at electron cyclotron resonance on Alfven modes has been studied. The equations that determine the energy flux density across the magnetic field generated by destabilized Alfven modes in a bounded plasma are derived and analyzed. It was found that the presence of so-called nonaxisymmetric resonances in the wave-particle interaction in stellarators can have a strong stabilizing effect due to the Landau damping mechanism on the Toroidal Alfven Modes (TAE) and the isomon modes. The redistribution of fast deuterium ions in the JET tokamak and alpha particles in the ITER tokamak reactor during sawtooth oscillations was simulated using the OFSEF code. The physics of transverse energy transfer by Alfven waves in tokamaks and stellarators is explained. Simulation of the effect of sawtooth collapses on neutron emission in the JET tokamak has been started. Product Description popup.authors Burdo Oleg S. Holoborodko Viktor Ya. Huryn Anatolii A. Kolesnychenko Yaroslav І. Lepyavko Bohdan S Lutsenko Vadym V. Marchenko Viktor S. Reznyk Svyatoslav M. Rudenko Tymofiy S. Tykhyy Anton V. Tyshchenko Margaryta H. popup.nrat_date 2022-03-09 Close