Gyrocenter-gauge kinetic theory
Gyrocenter-gauge kinetic theory
复制标题
DOI：
10.1063/1.1309031
复制
发表时间：
2000-08
影响因子：
2.2
通讯作者：
H. Qin;W. Tang;W. Lee
中科院分区：
文献类型：
--
作者：
H. Qin;W. Tang;W. Lee
陀螺中心-规范动力学理论是现有陀螺动力学理论的推广。从本质上讲，这里介绍的形式主义是一个动力学描述的磁化等离子体的陀螺中心坐标，这是完全等价的Vlasov-Maxwell系统的粒子坐标。特别是，如果回转半径小于磁场的标度长度，它可以处理高频范围以及通常与回转运动方法相关的常见低频范围。这种形式主义的一个显着的优点是，它使压缩阿尔芬波磁流体动力学（MHD）的应用和射频（射频）波相关的空间和实验室等离子体加热的直接粒子在细胞模拟。结果表明，在均匀磁化等离子体中，对任意波长和任意频率的电磁扰动，陀螺中心规范动磁化率可以精确地恢复积分等离子体的经典结果。
Gyrocenter-gauge kinetic theory is developed as an extension of the existing gyrokinetic theories. In essence, the formalism introduced here is a kinetic description of magnetized plasmas in the gyrocenter coordinates which is fully equivalent to the Vlasov–Maxwell system in the particle coordinates. In particular, provided the gyroradius is smaller than the scale-length of the magnetic field, it can treat high-frequency range as well as the usual low-frequency range normally associated with gyrokinetic approaches. A significant advantage of this formalism is that it enables the direct particle-in-cell simulations of compressional Alfven waves for magnetohydrodynamic (MHD) applications and of rf (radio frequency) waves relevant to plasma heating in space and laboratory plasmas. The gyrocenter-gauge kinetic susceptibility for arbitrary wavelength and arbitrary frequency electromagnetic perturbations in a homogeneous magnetized plasma is shown to recover exactly the classical result obtained by integrating ...