Autor: Kazakov, Y. O. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Progress in theoretical models of the ICRF mode conversion
Autorzy:: Kazakov, Y. O.
Powiązania:: https://bibliotekanauki.pl/articles/147690.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: ICRF heating
ion-ion hybrid resonance
mode conversion
tokamak
Opis:: The technique of heating the plasma with the electromagnetic waves in the ion cyclotron range of frequencies (ICRF) has many important applications that may lead to improved performance of tokamaks. Recently the heating efficiency of the ICRF mode conversion scenarios characterized by a narrow power deposition profiles received much attention. This paper highlights progress in the theoretical models of the ICRF mode conversion that allowed to achieve a successful experimental realisation of these scenarios in present-day tokamaks.
Źródło:: Nukleonika; 2012, 57, 1; 31-35
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Test particle modelling of ion collisional transport in tokamaks
Autorzy:: Kononenko, Z. S.
Kazakov, Y. O.
Powiązania:: https://bibliotekanauki.pl/articles/147708.pdf
Data publikacji:: 2012
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: diffusion coefficient
impurity transport
magnetic islands
Monte Carlo collision operator
resonant magnetic perturbation (RMP)
test particle code
Opis:: A numerical method is presented for evaluation of the radial diffusion coefficient, based on the full orbit modelling of particle orbits in the tokamak geometry. The code solves the full orbit equations of motion for a set of test particles in an arbitrary equilibrium magnetic field. The effect of Coulomb collisions of test ions with background plasma particles is simulated by means of an equivalent Monte Carlo collision operator which scatters the pitch angle as well as the gyrophase of the particle. The radial diffusion coefficient is estimated by calculating the temporal dependence of the mean-square displacement of an ensemble of monoenergetic test particles. As an illustration of the method the effect of magnetic islands on the impurity collisional transport is studied. It is shown that in presence of m = 2, n = 1 resonant magnetic perturbation (RMP) the diffusion coefficient for the tungsten ions (W28+, E = 1 keV) can increase by a factor of 5-10.
Źródło:: Nukleonika; 2012, 57, 1; 43-47
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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