Plasmas that are strongly magnetized in the sense that the gyrofrequency exceeds the plasma frequency exhibit novel transport properties that are not well understood. As a representative example, we compute the friction force acting on a massive test charge moving through a strongly coupled and strongly magnetized one-component plasma using a generalized Boltzmann kinetic theory. Recent works studying the weakly coupled regime have shown that strong magnetization leads to a transverse component of the friction force that is perpendicular to both the Lorentz force and velocity of the test charge, in addition to the stopping power component aligned antiparallel to the velocity. Recent molecular dynamics simulations have also shown that strong Coulomb coupling in addition to strong magnetization gives rise to a third component of the friction force in the direction of the Lorentz force. Here, we show that the generalized Boltzmann kinetic theory captures these effects and generally agrees well with the molecular dynamics simulations over a broad range of Coulomb coupling and magnetization strength regimes. The theory is also used to show that the “gyro” component of the friction in the direction of the Lorentz force arises due to asymmetries associated with gyromotion during short-range collisions. Computing the average motion of the test charge through the background plasma, the transverse force is found to strongly influence the trajectory by changing the gyroradius and the gyrofriction force is found to slightly change the gyrofrequency of the test charge resulting in a phase shift.

中文翻译：

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强耦合强磁化等离子体摩擦动力学模型

在陀螺频率超过等离子体频率的意义上被强磁化的等离子体表现出新的传输特性，这种特性尚不清楚。作为一个有代表性的例子，我们使用广义玻尔兹曼动力学理论计算了作用在大量测试电荷上的摩擦力，该电荷在强耦合和强磁化的单组分等离子体中移动。最近研究弱耦合机制的工作表明，强磁化导致摩擦力的横向分量垂直于洛伦兹力和测试电荷的速度，此外还有与速度反平行排列的停止功率分量。最近的分子动力学模拟还表明，除了强磁化之外，强库仑耦合还会在洛伦兹力的方向上产生第三个摩擦力分量。在这里，我们展示了广义玻尔兹曼动力学理论捕捉到了这些效应，并且在广泛的库仑耦合和磁化强度范围内与分子动力学模拟普遍吻合。该理论还用于证明洛伦兹力方向上摩擦的“陀螺”分量是由于短程碰撞期间与陀螺运动相关的不对称性而产生的。计算测试电荷通过背景等离子体的平均运动，