## 摘要

A new resistive, low-frequency (ω≪ω_{ba}∼ν _{a}, where ω is the frequency of the mode and ω_{ba} and ν_{a} are the bounce frequency and collision frequency for species a) instability is found in a tokamak geometry. The mode is driven unstable by the parallel viscous (bootstrap) current induced by the radial pressure gradient. It has a growth rate γ∼(ω _{*e}^{2}ν_{i})^{1/3} for ν_{i}≫ω_{*e}, where ω_{*e} is the electron diamagnetic drift frequency and ν_{i} is the ion-ion collision frequency. The frequency dependence of the parallel viscosity is also derived and utilized to show that drift wave branches of these modes are stable, but that this new mode remains unstable when the diamagnetic drift effects are included.

原文 | English |
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頁（從 - 到） | 1859-1865 |

頁數 | 7 |

期刊 | Physics of Fluids |

卷 | 28 |

發行號 | 6 |

DOIs | |

出版狀態 | Published - 1985 一月 1 |

## All Science Journal Classification (ASJC) codes

- 計算力學
- 凝聚態物理學
- 材料力學
- 機械工業
- 流體流動和轉移過程