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Quasilinear diffusion coefficients in a finite Larmor radius expansion for ion cyclotron heated plasmas

Title
Quasilinear diffusion coefficients in a finite Larmor radius expansion for ion cyclotron heated plasmas
Author
이정표
Keywords
CONSISTENT FULL-WAVE; TOKAMAK PLASMAS; DISTRIBUTIONS; SIMULATION; RANGE; ICRF
Issue Date
2017-04
Publisher
AMER INST PHYSICS
Citation
PHYSICS OF PLASMAS, v. 24, no. 5, Article no. 052502
Abstract
In this paper, a reduced model of quasilinear velocity diffusion by a small Larmor radius approximation is derived to couple the Maxwell's equations and the Fokker Planck equation self-consistently for the ion cyclotron range of frequency waves in a tokamak. The reduced model ensures the important properties of the full model by Kennel-Engelmann diffusion, such as diffusion directions, wave polarizations, and H-theorem. The kinetic energy change ((W)over dot) is used to derive the reduced model diffusion coefficients for the fundamental damping (n = 1) and the second harmonic damping (n = 2) to the lowest order of the finite Larmor radius expansion. The quasilinear diffusion coefficients are implemented in a coupled code (TORIC-CQL3D) with the equivalent reduced model of the dielectric tensor. We also present the simulations of the ITER minority heating scenario, in which the reduced model is verified within the allowable errors from the full model results.
URI
https://aip.scitation.org/doi/10.1063/1.4982060https://repository.hanyang.ac.kr/handle/20.500.11754/113624
ISSN
1070-664X; 1089-7674
DOI
10.1063/1.4982060
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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