Extreme ultra-violet burst, particle heating, and whistler wave emission in fast magnetic reconnection induced by kink-driven Rayleigh-Taylor instability
Extreme ultra-violet burst, particle heating, and whistler wave emission in fast magnetic reconnection induced by kink-driven Rayleigh-Taylor instability
复制标题
扭结驱动的瑞利-泰勒不稳定性引起的快速磁重联中的极端紫外线爆发、粒子加热和哨声波发射
DOI：
10.1063/1.4944390
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发表时间：
2016
影响因子：
2.2
通讯作者：
P. Bellan
中科院分区：
文献类型：
--
作者：
K. Chai;X. Zhai;P. Bellan
一个空间定位的高能极紫外（EUV）爆发成像在假设的位置快速磁场重联在等离子体射流产生的同轴螺旋注入源，这种EUV爆发表明强局部电子加热。一个圆极化的高频磁场扰动同时观察到在一定距离的重联区域，表明重联发射哨声波和霍尔动力学可能支配的重联。光谱测量显示同时快速离子加热。电子加热与欧姆耗散一致，而离子加热与离子轨迹变得随机一致。
A spatially localized energetic extreme ultra-violet (EUV) burst is imaged at the presumed position of fast magnetic reconnection in a plasma jet produced by a coaxial helicity injection source; this EUV burst indicates strong localized electron heating. A circularly polarized high frequency magnetic field perturbation is simultaneously observed at some distance from the reconnection region indicating that the reconnection emits whistler waves and that Hall dynamics likely governs the reconnection. Spectroscopic measurement shows simultaneous fast ion heating. The electron heating is consistent with Ohmic dissipation, while the ion heating is consistent with ion trajectories becoming stochastic.