Laboratory Observations of Hall Magnetic Field in Electron‐Only Magnetic Reconnection With a Guide Field

作者：Fa Yang, Quanming Lu, Qiaofeng Zhang, Jinlin Xie, Xinliang Gao, Yangguang Ke, Lei Tang, S.X. Hu, Yukang Shu, Y. Liu, Longlong Sang, San Lu, Rongsheng Wang, Weixing Ding · 发表于：Geophysical Research Letters · 年份：2025 · DOI：10.1029/2024gl114151 · 被引用次数：8 · 研究领域：Ionosphere and magnetosphere dynamics、Solar and Space Plasma Dynamics、Geomagnetism and Paleomagnetism Studies

Abstract Recently, electron‐only reconnection, in which there is no obvious ion bulk flow and ion heating, has been pervasively observed in the Earth's magnetosphere. In this Letter, we realize electron‐only reconnection with a guide field in the Keda Linear Magnetized Plasma (KLMP) device. By measuring the magnetic field, we identify unambiguously a distorted quadrupolar structure of the magnetic field in the out‐of‐plane direction. At the same time, electrons are obviously heated in the current sheet with the half‐width about 0.8 electron inertial length. The maximum velocity of the estimated electron flow in the reconnection plane is about eight Alfvén speed.