Simulations of Collisionless Perpendicular Shocks in Partially Ionized Plasmas
Simulations of Collisionless Perpendicular Shocks in Partially Ionized Plasmas
复制标题
部分电离等离子体中无碰撞垂直冲击的模拟
DOI：
10.1103/physrevlett.111.245002
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发表时间：
2013
影响因子：
8.6
通讯作者：
Yutaka
中科院分区：
文献类型：
--
作者：
Ohira;Yutaka
用二维混合粒子模拟方法研究了无碰撞激波在部分电离等离子体中的传播。结果表明，中性粒子从下游区泄漏到上游区，泄漏的中性粒子在上游区成为拾取离子并改变激波结构，拾取离子被优先加速，上游区和下游区的拾取离子激发等离子体不稳定性.
Perpendicular collisionless shocks propagating into partially ionized plasmas are investigated by two-dimensional hybrid particle simulations. It is shown that some neutral particles leak into the upstream region from the downstream region, the leaking neutral particles become pickup ions in the upstream region and modify the shock structure, the pickup ions are preferentially accelerated, and plasma instabilities are excited by the pickup ions in the upstream and downstream regions.