The reversibility of magnetic reconnection
The reversibility of magnetic reconnection
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DOI：
10.1063/5.0050575
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发表时间：
2021-03
影响因子：
2.2
通讯作者：
M. Xuan;M. Swisdak;J. Drake
中科院分区：
文献类型：
--
作者：
M. Xuan;M. Swisdak;J. Drake
研究了磁场重联过程中能量从磁场向周围等离子体转移的可逆性。测试粒子在场的分析模型中的轨迹表明，不可逆性与分界线交叉点和较弱的磁场区域有关。包含引导场增加了可逆性的程度。完整的动力学模拟与粒子在细胞的代码支持这些结果，并表明，虽然时间反演模拟在第一次“un-reconnect”，他们最终演变成一个重新连接的状态。
The reversibility of the transfer of energy from the magnetic field to the surrounding plasma during magnetic reconnection is examined. Trajectories of test particles in an analytic model of the fields demonstrate that irreversibility is associated with separatrix crossings and regions of weaker magnetic field. Inclusion of a guide field increases the degree of reversibility. Full kinetic simulations with a particle-in-cell code support these results and demonstrate that while time-reversed simulations at first “un-reconnect”, they eventually evolve into a reconnecting state.