等离子体库埃特实验中磁旋转不稳定性的观测前景
Prospects for observing the magnetorotational instability in the Plasma Couette Experiment
摘要：
许多天体物理盘，如原行星盘，处于非理想的等离子体磁流体动力学（MHD）效应可以显著影响磁旋转不稳定性（MRI）行为的区域。讨论了在等离子体库埃特实验（PCX）中研究这些效应的可能性。不可压缩的，耗散的全局稳定性分析，包括等离子体特定的两种流体的影响和中性碰撞，这是本质上缺乏在液态金属实验中的泰勒-库埃特流（TCFs）的分析。结果表明，与边界驱动的流量，离子中性碰撞拖曳体力显着影响的方位角速度分布，从而限制了MRI不存在的制度的流量。电驱动流（EDF）被提出作为一种替代的体力流驱动，其中MRI可以在更容易实现的等离子体参数不稳定。描述了达到MRI相关参数空间和必要硬件升级的场景。
英文摘要：
Many astrophysical disks, such as protoplanetary disks, are in a regime where non-ideal, plasma-specific magnetohydrodynamic (MHD) effects can significantly influence the behavior of the magnetorotational instability (MRI). The possibility of studying these effects in the Plasma Couette Experiment (PCX) is discussed. An incompressible, dissipative global stability analysis is developed to include plasma-specific two-fluid effects and neutral collisions, which are inherently absent in analyses of Taylor-Couette flows (TCFs) in liquid metal experiments. It is shown that with boundary driven flows, a ion-neutral collision drag body force significantly affects the azimuthal velocity profile, thus limiting the flows to regime where the MRI is not present. Electrically driven flow (EDF) is proposed as an alternative body force flow drive in which the MRI can destabilize at more easily achievable plasma parameters. Scenarios for reaching MRI relevant parameter space and necessary hardware upgrades are described.
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