The Current-Free Electric Double Layer in a Coronal Magnetic Funnel
The Current-Free Electric Double Layer in a Coronal Magnetic Funnel
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日冕磁漏斗中的无电流双电层
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
C. Charles
中科院分区：
文献类型：
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作者：
R. Boswell;E. Marsch;C. Charles
最近在许多实验室设备中发现了无电流双层（CFDL），当低碰撞等离子体被迫从高磁场源区域扩展到低磁场扩散区域时。这个实验装置与日冕磁漏斗中普遍存在的自然条件有着惊人的相似之处。人们普遍认为磁场对准的电势破坏是由电子电流驱动的，尽管 CDFL 的理论可能性已经为人所知一段时间了。鉴于最近的实验验证，我们通过研究日冕漏斗中 CFDL 的可能性，为太阳等离子体物理学做出了贡献，这与实验室实验有很多共同点。因此，CFDL可能在供应和加速冠状漏斗中的等离子体方面发挥重要作用。
Current-free double layers (CFDLs) have been recently discovered in a number of laboratory devices, when a low collisional plasma is forced to expand from a high magnetic field source region to a low magnetic field diffusion region. This experimental setup bears a striking resemblance to the natural conditions prevailing in the magnetic funnels of the solar corona. It was commonly thought that magnetic-field-aligned potential disruptions were driven by electron currents, although the theoretical possibility of a CDFL has been known of for some time. Given its recent experimental verification, we make here a contribution to solar plasma physics by investigating the possibility of CFDLs in coronal funnels, which have much in common with the laboratory experiments. Therefore, CFDLs may play an important role in supplying and accelerating plasma in coronal funnels.