标题： 磁重联中的电子冲浪加速 显示英文标题

标题： Electron Surfing Acceleration in Magnetic Reconnection

摘要： 我们讨论了由于“冲浪加速”机制，在X型磁重联区域附近产生了高能电子。 在薄的等离子体片中，指向中性片的极化电场会在lobe区域与等离子体片边界的交界处，伴随霍尔电流而产生。 通过使用粒子-in-cell模拟，我们证明在外部驱动的重联系统中，极化电场会被显著增强，并且一些电子可以被困于极化场的静电势阱中。 在捕获阶段，电子可以从对流/感应重联电场中获得能量。 我们讨论了利用冲浪加速机制可以在X型零位区域及其周围快速生成MeV能级的相对论电子。 显示英文摘要

摘要： We discuss that energetic electrons are generated near the X-type magnetic reconnection region due to a surfing acceleration mechanism. In a thin plasma sheet, the polarization electric fields pointing towards the neutral sheet are induced around the boundary between the lobe and plasma sheet in association with the Hall electric current. By using a particle-in-cell simulation, we demonstrate that the polarization electric fields are strongly enhanced in an externally driven reconnection system, and some electrons can be trapped by the electrostatic potential well of the polarization field. During the trapping phase, the electrons can gain their energies from the convection/inductive reconnection electric fields. We discuss that relativistic electrons with MeV energies are quickly generated in and around the X-type neutral region by utilizing the surfing acceleration.