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Effect of ion cyclotron motion on the structure of wakes: A Vlasov simulation

机译：离子回旋加速器运动对尾流结构的影响：Vlasov模拟

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摘要

The global structure of wake fields behind an unmagnetized object in the solar wind is studied by means of a 2.5-dimensional full electromagnetic Vlasov simulation. The interaction of a plasma flow with an unmagnetized object is quite different from that with a magnetized object such as the Earth. Due to the absence of the global magnetic field, the unmagnetized object absorbs plasma particles which reach the surface, generating a plasma cavity called a wake on the anti-solar side of the object. The interaction between the solar wind with an out-of-plane interplanetary magnetic field and an unmagnetized object of ion-gyro scale is examined to study the effect of the ion cyclotron motion on the structure of wake fields. It is shown that the wake boundary layer is broadened when the inner product of the electric force and the density gradient of the wake boundary layer is negative. On the other hand, a steep wake boundary layer is formed with a negative inner product. The result suggests that the structures of wake fields become asymmetric due to the in-plane E cross B drift motion of ions.
机译：通过2.5维全电磁Vlasov模拟研究了太阳风中未磁化物体后面的尾波场的整体结构。等离子体流与未磁化物体的相互作用与与磁化物体（例如地球）的相互作用非常不同。由于没有全局磁场，未磁化的物体会吸收到达表面的等离子体粒子，从而在物体的反太阳侧产生称为“尾流”的等离子体腔。研究了平面外行星际磁场与太阳风与离子陀螺未磁化物体之间的相互作用，以研究离子回旋运动对尾流场结构的影响。结果表明，当电力和尾流边界层的密度梯度的内积为负值时，尾流边界层变宽。另一方面，陡峭的尾流边界层由负的内积形成。结果表明，由于离子的面内E跨B漂移运动，尾波场的结构变得不对称。

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