磁通量管准直中的动态停滞等离子体流
Dynamic and Stagnating Plasma Flow Leading to Magnetic Flux Tube Collimation
摘要：
高度准直的充满等离子体的磁通量管经常在银河系、恒星和实验室尺度上被观测到。我们建议，一个单一的，通用的磁流体动力学泵送过程解释了为什么这样的准直，充满等离子体的磁通量管是无处不在的。来自仔细诊断的天体物理喷流实验室模拟的实验证据证实了这一论断，并在这里报道。磁流体动力学过程将等离子体泵入磁通量管，并且所产生的流的停滞导致该磁通量管变得准直。
英文摘要：
Highly collimated, plasma-filled magnetic flux tubes are frequently observed on galactic, stellar and laboratory scales. We propose that a single, universal magnetohydrodynamic pumping process explains why such collimated, plasma-filled magnetic flux tubes are ubiquitous. Experimental evidence from carefully diagnosed laboratory simulations of astrophysical jets confirms this assertion and is reported here. The magnetohydrodynamic process pumps plasma into a magnetic flux tube and the stagnation of the resulting flow causes this flux tube to become collimated.
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