Drift wave instabilities (DWI) might be take a part for anomalous transport in modern day tokamaks due to contributions of edge turbulence and zonal flows. Experimentally, it is found that micro-level turbulence (associated with two-fluid dynamics) braced with macro-level (associated with single-fluid dynamics) magnetohydrodynamics-type processes. In this paper, additional two-fluid effect viz. ion viscosity on the electromagnetic (EM) linear resistive drift wave instability is analyzed by using a two-fluid MHD model. A modify dispersion relation for EM drift modes in a nonuniform magnetized plasma is derived, taken into account equilibrium pressure gradients, effect of finite ion-sound gyro-radius associated with electron–ion decoupling and viscous effect due to ions. The dispersion relation is then analyzed both analytically as well as numerically. It is shown, how additional two-fluid effects modify the growth rate for DWI in different regimes. The standard resistive drift-Alfven mode is reproduced in the cold ion case. Moreover, it is estimated that these effects provide the possibility of novel effects on EM instabilities in a nonuniform magnetized plasma. The results should be useful in the interpretation of EM fluctuations in nonuniform magneto-plasmas in which resistivity is a key element in calculations of dissipative drift instabilities.

中文翻译：

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燃烧等离子体中的电磁粘阻漂移波不稳定性

由于边缘湍流和纬向流的贡献，漂移波不稳定性 (DWI) 可能参与现代托卡马克的异常传输。通过实验发现，微观水平的湍流（与双流体动力学相关）与宏观水平（与单流体动力学相关）磁流体动力学类型的过程相关。在本文中，附加的二流体效应即。离子粘度对电磁 (EM) 线性电阻漂移波不稳定性的分析使用双流体 MHD 模型。考虑到平衡压力梯度、与电子-离子去耦相关的有限离子声陀螺半径的影响以及离子引起的粘性效应，推导出了非均匀磁化等离子体中 EM 漂移模式的修正色散关系。然后对色散关系进行分析和数值分析。它显示了额外的两种流体效应如何改变不同状态下 DWI 的增长率。标准电阻漂移-阿尔文模式在冷离子情况下重现。此外，据估计，这些影响提供了对非均匀磁化等离子体中 EM 不稳定性的新影响的可能性。结果应该有助于解释非均匀磁等离子体中的 EM 波动，其中电阻率是计算耗散漂移不稳定性的关键因素。据估计，这些效应提供了对非均匀磁化等离子体中 EM 不稳定性的新效应的可能性。结果应该有助于解释非均匀磁等离子体中的 EM 波动，其中电阻率是计算耗散漂移不稳定性的关键因素。据估计，这些效应提供了对非均匀磁化等离子体中 EM 不稳定性的新效应的可能性。结果应该有助于解释非均匀磁等离子体中的 EM 波动，其中电阻率是计算耗散漂移不稳定性的关键因素。