Neoclassical quasilinear theory in the superbanana plateau regime and banana kinetics in tokamaks

K. C. Shaing

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5 引文 斯高帕斯(Scopus)

摘要

Neoclassical quasilinear transport theory, which is part of a more general theory that unifies neoclassical and quasilinear theories, is extended to the superbanana plateau regime for low frequency (of the order of the drift frequency) electrostatic fluctuations. The physics mechanism that is responsible for the transport losses in this regime is the superbanana plateau resonance. Besides the usual magnetic drifts, Doppler shifted mode frequency also contributes to the resonance condition. Because the characteristic frequency involved in the resonance is of the order of the drift frequency, which is lower than either the bounce or the transit frequency of the particles, the transport losses are higher than the losses calculated in the conventional quasilinear theory. The important effects of the finite banana width, i.e., banana kinetics, are included and are found to reduce the transport losses for short wavelength modes. The implications on the energetic alpha particle energy loss are discussed.

原文English
文章編號122504
期刊Physics of Plasmas
24
發行號12
DOIs
出版狀態Published - 2017 12月 1

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學

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