Electromagnetic banana kinetic equation and its applications in tokamaks

K. C. Shaing, M. S. Chu, S. A. Sabbagh, J. Seol

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

A banana kinetic equation in tokamaks that includes effects of the finite banana width is derived for the electromagnetic waves with frequencies lower than the gyro-frequency and the bounce frequency of the trapped particles. The radial wavelengths are assumed to be either comparable to or shorter than the banana width, but much wider than the gyro-radius. One of the consequences of the banana kinetics is that the parallel component of the vector potential is not annihilated by the orbit averaging process and appears in the banana kinetic equation. The equation is solved to calculate the neoclassical quasilinear transport fluxes in the superbanana plateau regime caused by electromagnetic waves. The transport fluxes can be used to model electromagnetic wave and the chaotic magnetic field induced thermal particle or energetic alpha particle losses in tokamaks. It is shown that the parallel component of the vector potential enhances losses when it is the sole transport mechanism. In particular, the fact that the drift resonance can cause significant transport losses in the chaotic magnetic field in the hitherto unknown low collisionality regimes is emphasized.

原文English
文章編號032501
期刊Physics of Plasmas
25
發行號3
DOIs
出版狀態Published - 2018 三月 1

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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