Explosive Coalescence of Magnetic Islands
Explosive Coalescence of Magnetic Islands
复制标题
磁岛的爆炸合并
DOI：
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发表时间：
1985
影响因子：
1.5
通讯作者：
J. Sakai
中科院分区：
文献类型：
--
作者：
T. Tajima;J. Sakai
通过对粒子和磁流体(MHD)模拟的研究，发现了与聚结不稳定性的非线性演化有关的爆炸重联过程。炸药的聚结是一个自相似的磁崩塌过程，其中磁能和静电能以及温度分别向爆炸时间爆炸，分别为As(to-t)-8/3(to-t)-4和(to-t)-8/3。通过推导Sagdeev势中标度因子的运动方程，可以识别这些量的随后的振幅振荡。给出了太阳耀斑脉冲相的一种可能的应用。
An explosive reconnection process associated with nonlinear evolution of the coalescence instability is found through studies of particle and magnetohydrodynamic (MHD) simulations. The explosive coalescence is a self-similar process of magnetic collapse, in which the magnetic and electrostatic energies and temperatures explode toward the explosion time to as (to - t)-8/3 (to - t)-4, and (to - t)-8/3, respectively. Ensuing amplitude oscillations in these quantities are identified by deriving an equation of motion for the scale factor in the Sagdeev potential. A possible application to the impulsive phase of solar flares is offered.