论文标题
发现与无碰撞磁重新连接有关的双厅图案
Discovery of double Hall pattern associated with collisionless magnetic reconnection in dusty plasmas
论文作者
论文摘要
磁重新连接在空间和实验室的磁化等离子体中普遍存在。尽管对电子离子等离子体的重新连接进行了重大研究，但对带负电荷的灰尘晶粒的磁化等离子体进行重新连接的研究很少。在这里，我们报告了第一个完全动力学的模拟，以三种物种（即电子，质子和带负电荷的灰尘颗粒）中的无碰撞重新连接）尘土飞扬的等离子体，通过该等离子体发现了双霍尔图案。双厅模式由离子和电子扩散区域之间的传统大厅四倍电流组成，以及离子和尘埃扩散区域边界之间的反向霍尔电流。还给出了重新连接率的分析。这项研究可能适用于解释行星磁层和天体物理物体的观察结果，并且可以在尘土飞扬的实验室研究中实现。
Magnetic reconnection is prevalent in magnetized plasmas in space and laboratories. Despite significant investigations on reconnection in electron-ion plasmas, studies of reconnection in magnetized plasmas with negatively charged dust grains are quite sparse. Here we report the first fully kinetic simulations of collisionless reconnection in a three-species (i.e., electron, proton, and negatively charged dust grain) dusty plasma, through which the discovery of double Hall pattern is made. The double Hall pattern consists of a traditional Hall quadruple current in between the ion and electron diffusion region, and a reversed Hall current in between the boundary of the ion and dust diffusion region. The analysis of the reconnection rate is also given. This study may be applicable to explain observations of planetary magnetospheres and the astrophysical objects, and may be realized in the laboratory studies of dusty plasmas.
