具有可压缩磁turbulence的部分湍流空间等离子体中的Cosmic ray输运
Cosmic ray transport in partially turbulent space plasmas with compressible magnetic turbulence
摘要：
最近，在轴对称不可压缩磁湍流的情况下，将准线性近似推广到粒子轨道，发展了一个新的磁化空间等离子体中宇宙射线输运理论。在这里，我们推广的方法的重要物理情况下的可压缩等离子体。如前所述，在不可压缩等离子体的情况下，我们允许任意的陀螺相位偏差的未扰动的螺旋轨道中的均匀磁场。对于准稳态和空间均匀磁湍流的情况，我们在小拉莫尔半径近似下导出了回旋相位平均宇宙线Fokker-Planck系数。垂直和俯仰角的福克-普朗克系数和垂直和平行的空间扩散系数的上限。
英文摘要：
Recently a new transport theory of cosmic rays in magnetized space plasmas extending the quasilinear approximation to the particle orbit has been developed for the case of an axisymmetric incompressible magnetic turbulence. Here we generalize the approach to the important physical case of a compressible plasma. As previously obtained in the case of an incompressible plasma we allow arbitrary gyrophase deviations from the unperturbed spiral orbits in the uniform magnetic field. For the case of quasi-stationary and spatially homogeneous magnetic turbulence we derive in the small Larmor radius approximation gyro-phase averaged cosmic ray Fokker-Planck coefficients. Upper limits for the perpendicular and pitch-angle Fokker-Planck coefficients and for the perpendicular and parallel spatial diffusion coefficients are presented.
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