@article{oai:nifs-repository.repo.nii.ac.jp:00010495,
 author = {KANNO, Ryotaro and カンノ, リュウタロウ and NUNAMI,  Masanori and SATAKE,  Shinsuke and MATSUOKA,  Seikichi and TAKAMURA, Hisanori},
 issue = {1},
 journal = {Nuclear Fusion, Nuclear Fusion},
 month = {},
 note = {Drift-kineticδ f simulations are performed to investigate effect of ergodic field lines caused by resonant magnetic perturbations (RMPs) on radial heat diffusivity of electrons in the edge region of toroidal plasma of collisionality V* 〜0:1.  The following is assumed in the simulations. The ergodic region is bounded radially on both sides by closed magnetic surfaces. The pressure gradient remains nonzero in the ergodic region because of an incomplete  flattening of the pressure profile, and the characteristic scale length of the pressure gradient is of larger order than the overlapping width of the neighbouring magnetic islands. It is found in the quasi-steady state of δf that the electron heat diffusivity is of smaller order than the theoretical estimate derived by the Rechester-Rosenbluth model (Rechester A.B. and Rosenbluth M.N. 1978Phys.Rev.  Lett.4038).  The radial heat conduction is dominated not only by parallelmotions along the ergodic  field lines but also by trapped particle motions generated by the RMP  field. The contribution of the trapped particles reduces the radial heat conduction enhanced by the parallel motions.},
 title = {Electron heat diffusivity in radially-bounded ergodic region of toroidal plasma},
 volume = {28},
 year = {2018}
}