@article{oai:repo.qst.go.jp:00081832, author = {大谷, 芳明 and 田中謙治 and 伊神弘恵 and 居田克巳 and 鈴木康浩 and 武村勇輝 and 土屋隼人 and Sanders, Mike and 吉沼幹朗 and 徳澤季彦 and 山田一博 and 安原亮 and 舟場久芳 and 庄司主 and 坂東隆宏 and Yoshiaki, Ohtani and Takahiro, Bando}, issue = {3}, journal = {Nuclear Fusion}, month = {Feb}, note = {Effects of stochastic magnetic field in a plasma center produced by electron cyclotron current drive (ECCD) to transport have been revealed. Because the electron temperature profile is flat in core region, in the case of counter-directed ECCD (ctr-ECCD) against the toroidal magnetic field, the magnetic field is stochastic in the core region with rotational transform ι– ~ 1/3. Particle diffusion coefficient of the ctr-ECCD plasma is approximately 20 times as large as that of the plasma without the stochastic magnetic field produced by co-directed ECCD (co-ECCD) at maximum. Furthermore, in the stochastic magnetic field with ctr-ECCD, counter directed intrinsic rotation is observed in the plasma with balanced NBI discharge.}, title = {Effects of core stochastization to particle and momentum transport}, volume = {61}, year = {2021} }