论文标题
在国家点火设施的高度扩展电流板上的快速磁重新连接
Fast magnetic reconnection in highly-extended current sheets at the National Ignition Facility
论文作者
论文摘要
在国家点火设施的磁化激光产生的等离子体之间观察到快速磁重连接。通过平铺两排激光器产生了两个高度的等离子体羽，每个羽流在每个羽流中都通过Biermann电池效应产生。详细的磁场观察结果，使用质子X射线照相仪，使用d $^3 $ HE胶囊内爆，揭示了在具有较大纵横比$ \ sim 100 $的扩展的准1D电流纸中发生的重新连接。 1D几何形状允许对磁场进行严格而独特的重建，该重建显示了一个重新连接的电流板，该板将靠近电子陀螺尺度的半宽度变细。尽管纵横比很大，但很大一部分磁通量还是重新连接，这表明非gyrotropic电子压力张量支持了快速重新连接。
Fast magnetic reconnection was observed between magnetized laser-produced plasmas at the National Ignition Facility. Two highly-elongated plasma plumes were produced by tiling two rows of lasers, with magnetic fields generated in each plume by the Biermann battery effect. Detailed magnetic field observations, obtained from proton radiography using a D$^3$He capsule implosion, reveal reconnection occurring in an extended, quasi-1D current sheet with large aspect ratio $\sim 100$. The 1-D geometry allowed a rigorous and unique reconstruction of the magnetic field, which showed a reconnection current sheet that thinned down to a half-width close to the electron gyro-scale. Despite the large aspect ratio, a large fraction of the magnetic flux reconnected, suggesting fast reconnection supported by the non-gyrotropic electron pressure tensor.
