Hyper-resistivity produced by tearing mode turbulence
Hyper-resistivity produced by tearing mode turbulence
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DOI：
10.1063/1.865798
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发表时间：
1986-11
影响因子：
4.6
通讯作者：
H. Strauss
中科院分区：
文献类型：
--
作者：
H. Strauss
撕裂模湍流产生超电阻率或有效反常电子粘度。用直接相互作用近似计算了平均磁场和长波长模的超阻率。超电阻率解释了反场箍缩实验中的电流弛豫，并给出了S的磁起伏标度为-1/3。它导致托卡马克破裂湍相撕裂模生长速率的提高。在天体物理学中，由于发电机效应，它限制了磁能的增长，并可能解释快速重联现象，如太阳耀斑。
Tearing mode turbulence produces a hyperresistivity or effective anomalous electron viscosity. The hyperresistivity is calculated for the mean magnetic field quasi-linearly, and for long-wavelength modes using the direct interaction approximation. The hyperresistivity accounts for current relaxation in reversed-field pinch experiments, and gives a magnetic fluctuation scaling of S to the -1/3. It causes enhanced tearing mode growth rates in the turbulent phase of tokamak disruptions. In astrophysics, it limits magnetic energy growth because of the dynamo effect, and may explain rapid reconnection phenomena such as solar flares.