Effect of collisionality and radial electric field on bootstrap current in the Large Helical Device
Effect of collisionality and radial electric field on bootstrap current in the Large Helical Device
复制标题
碰撞和径向电场对大型螺旋装置自举电流的影响
DOI：
10.1088/0029-5515/35/3/i07
复制
发表时间：
1994
期刊：
影响因子：
3.3
通讯作者：
M. Wakatani
中科院分区：
文献类型：
--
作者：
K. Watanabe;N. Nakajima;M. Okamoto;K. Yamazaki;Y. Nakamura;M. Wakatani
自举电流在更高的碰撞状态下减小，并且在仿星器/日光管中，预测当电子和离子属于不同的碰撞状态时，存在与径向电场成比例的新古典电流分量。为了评估仿星器/日光管在从无碰撞 1/ν 到 Pfirsch-Schluter 体系的整个碰撞范围内的自举电流，提出了一种新的连接公式。该连接公式已应用于大型螺旋装置（LHD）等离子体，其中离子和电子属于不同的碰撞状态，并获得了包括自举电流的有限β MHD 平衡。对于电子根中的 ECRH (T1 << Te) 等 LHD 等离子体，电势为电子温度两倍的自举电流减少到零电势时的 1/5 至 2/3 左右。然后，即使 LHD 等离子体的 beta 值相同，MHD 平衡构型也会根据碰撞性和径向电场发生显着变化
The bootstrap current decreases in a more highly collisional regime, and in stellarator/heliotron it is predicted that a neoclassical current component proportional to the radial electric field exists when electrons and ions belong to different regimes of collisionality. To evaluate the bootstrap current in stellarator/heliotron in the whole range of collisionality from the collisionless 1/ν to the Pfirsch-Schluter regime, a new connection formula has been proposed. This connection formula has been applied to Large Helical Device (LHD) plasmas in which ions and electrons belong to different collisionality regimes, and finite beta MHD equilibria including the bootstrap current have been obtained. For LHD plasmas such as ECRH (T1 << Te) in electron root, the bootstrap current with an electric potential twice as high as the electron temperature reduces to about 1/5 to 2/3 of that with zero electric potential. Then, the MHD equilibrium configuration changes significantly, depending on collisionality and radial electric field, even for the same beta value of the LHD plasmas
影响因子：
3.3
作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox
通讯作者：
A. Gibson;T. Sekiguchi;K. Lackner;S. Bodner;R. Hancox