Intrinsic current driven by electromagnetic electron drift wave turbulence in the tokamak pedestal region
Intrinsic current driven by electromagnetic electron drift wave turbulence in the tokamak pedestal region
复制标题
托卡马克基座区电磁电子漂移波湍流驱动的本征电流
DOI：
10.1088/1361-6587/ab4682
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发表时间：
2019-10
影响因子：
2.2
通讯作者：
Zhuang Ge
中科院分区：
文献类型：
--
作者：
He Wen;Wang Lu;Zhuang Ge
The local intrinsic parallel current density driven by electron drift wave (DW) turbulence including electromagnetic (EM) effects is analytically studied. The scalings of the ratios of intrinsic current density driven by residual turbulent flux and by a turbulent source to the bootstrap (BS) current density with electron density and temperature are predicted to be T e 3 / 4 T i / n e and T e T i / n e , respectively. Based on the typical parameters in the DIII-D pedestal region, the local intrinsic current density driven by both the residual turbulent flux and the turbulent source is negligible. However, despite the negligible turbulent source driven current, the residual turbulent flux driven local intrinsic current density by EM DW turbulence can reach about 66% of the BS current density for International Thermonuclear Experimental Reactor (ITER) pedestal parameters due to much lower collisionality in ITER than in DIII-D. Moreover, the contributions from adiabatic ES parts, non-adiabatic ES parts, and non-adiabatic EM parts of the plasma response to EM fluctuations are analyzed. It is found that there is a strong cancellation between the non-adiabatic ES response and the non-adiabatic EM response for the ITER pedestal case, and thus the kinetic stress contributed by the adiabatic ES response of parallel electron pressure dominates the intrinsic current drive. This is different from the ES electron DW case. Therefore, the EM effects on turbulence driven intrinsic current density should be carefully considered in the future reactor with a high ratio of electron pressure to the magnetic pressure and steep pressure profile.
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托卡马克等离子体中电磁电子温度梯度湍流驱动的本征电流
影响因子：
3.3
作者：
He Wen;Wang Lu;Peng Shuitao;Guo Weixin;Zhuang Ge
通讯作者：
Zhuang Ge
DIII-D 托卡马克基座中的微湍流。
DOI：
10.1063/1.4972079
发表时间：
2016-12
期刊：
PHYSICS OF PLASMAS 23, 122507 (2016)
影响因子：
--
作者：
Z. Lin;I. Holod;Y. Xiao;B. Li
通讯作者：
B. Li
影响因子：
8.6
作者：
S. Itoh;K. Itoh;M. Yagi
通讯作者：
S. Itoh;K. Itoh;M. Yagi
影响因子：
2.2
作者：
Ö. Gürcan;P. Diamond;P. Hennequin;C. McDevitt;X. Garbet;C. Bourdelle
通讯作者：
Ö. Gürcan;P. Diamond;P. Hennequin;C. McDevitt;X. Garbet;C. Bourdelle
影响因子：
4.6
作者：
H. Strauss
通讯作者：
H. Strauss