论文标题
丝线丝中的粒子轨迹：外田倾斜和混乱的影响
Particle trajectories in Weibel filaments: influence of external field obliquity and chaos
论文作者
论文摘要
当两个无碰撞的血浆壳碰撞时，它们会互穿，重叠区域可能会使造成碰撞参数的某些值不稳定。这种不稳定性会生长磁性丝，如果要形成何时形成微胞，则必须在饱和时阻止传入的流量。在最近的一篇论文中[J。血浆物理。 （2016），第1卷。 82，905820403]，发现在细丝中实现玩具模型，以使足够强的外部磁场$ \ mathbf {b} _0 $可以防止细丝阻止流量（如果与之对齐）。表示$ b_f $在磁性丝中的磁场值，如果$α= b_0/b_f> 1/2 $，所有测试粒子都会通过它们流。在这里，该结果扩展到斜外侧$ b_0 $与流量的角度$θ$的情况。从数字上发现的结果只是$α>κ（θ）/\cosθ$，其中$κ（θ）$是订单统一的。值得注意的是，测试粒子表现出混乱的轨迹。
When two collisionless plasma shells collide, they interpenetrate and the overlapping region may turn Weibel unstable for some values of the collision parameters. This instability grows magnetic filaments which, at saturation, have to block the incoming flow if a Weibel shock is to form. In a recent paper [J. Plasma Phys. (2016), vol. 82, 905820403], it was found implementing a toy model for the incoming particles trajectories in the filaments, that a strong enough external magnetic field $\mathbf{B}_0$ can prevent the filaments to block the flow if it is aligned with. Denoting $B_f$ the peak value of the field in the magnetic filaments, all test particles stream through them if $α=B_0/B_f > 1/2$. Here, this result is extended to the case of an oblique external field $B_0$ making an angle $θ$ with the flow. The result, numerically found, is simply $α> κ(θ)/\cosθ$, where $κ(θ)$ is of order unity. Noteworthily, test particles exhibit chaotic trajectories.
