Chaos-induced resistivity in collisionless magnetic reconnection.
Chaos-induced resistivity in collisionless magnetic reconnection.
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DOI：
10.1103/physrevlett.88.045003
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发表时间：
2002-01
影响因子：
8.6
通讯作者：
R. Numata;Z. Yoshida
中科院分区：
文献类型：
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作者：
R. Numata;Z. Yoshida
磁零点作为粒子描述混沌轨道的散射中心，混合效应增加了动能熵。在存在粒子对流进出混沌区域的开放系统中，可以避免熵饱和，从而实现连续耗散。离子由混沌引起的无碰撞电阻率使快速磁重联成为可能。通过匹配重联的微观(动力学过程)和宏观参数，我们得到了一个自洽的扩散区域模型。
Magnetic null points act as scattering centers where particles describe chaotic orbits and the mixing effect increases the kinetic entropy. In an open system where convection of particles into/from the chaos region exists, the saturation of the entropy can be avoided, and continuous dissipation is achieved. The chaos-induced collisionless resistivity of ions enables fast magnetic reconnection. By matching the microscopic (kinetic process) and the macroscopic parameters of reconnection, we obtain a self-consistent model of the diffusion region.