论文标题
强烈磁化等离子体中的摩擦力
Friction Force in Strongly Magnetized Plasmas
论文作者
论文摘要
通过等离子体运动的带电粒子会经历一种通常与其速度反平行的摩擦力。最近可以预测，在强磁化等离子体中，血浆颗粒陀螺频率超过血浆频率，摩擦还包括垂直于速度和洛伦兹力的横向成分。在这里，使用分子动力学模拟证实了这一预测，并表明横向分量的相对大小随血浆偶联强度而增加。该结果影响在广泛应用中发现的强磁化等离子体中的单个颗粒运动和宏观转运。
A charged particle moving through a plasma experiences a friction force that commonly acts antiparallel to its velocity. It was recently predicted that in strongly magnetized plasmas, in which the plasma particle gyro-frequency exceeds the plasma frequency, the friction also includes a transverse component that is perpendicular to both the velocity and Lorentz force. Here, this prediction is confirmed using molecular dynamics simulations, and it is shown that the relative magnitude of the transverse component increases with plasma coupling strength. This result influences single particle motion and macroscopic transport in strongly magnetized plasmas found in a broad range of applications.
