California Institute of Technology, Pasadena, 91125, USA.
Phys Rev Lett. 2012 Aug 17;109(7):075001. doi: 10.1103/PhysRevLett.109.075001. Epub 2012 Aug 13.
Laboratory experiments demonstrate high-speed plasma flows from both footpoints of arched magnetic flux tubes, resulting in bulk plasma transport into the flux tube and persistent axial collimation even as the flux tube lengthens and kinks. The measured flows are in agreement with the predictions of hoop force and collimation models involving fundamental MHD forces. These forces are expected to drive plasma acceleration in other open flux configurations with arched geometries, such as those found on the solar surface.
实验室实验证明，拱形磁通量管的两个端点都存在高速等离子体流动，导致大量等离子体进入通量管，并在通量管伸长和扭曲时保持轴向准直。测量到的流动与涉及基本 MHD 力的环向力和准直模型的预测相符。这些力预计将驱动具有拱形几何形状的其他开放磁通量结构中的等离子体加速，例如在太阳表面发现的那些结构。
