电子平均自由程（the mean free path of a electron）是指电子相继两次碰撞平均运动的路程。
金属中自旋翻转散射长度远长于电子平均自由程，近来关于自旋翻转散射效应的研究主要集中于扩散区域。
Because the spin-flip length is longer than the electron mean-free-path in a metal, past studies of spin-flip scattering were limited to the diffusive regime.
电子复自能的虚部给出了空间和角度相关的微分倒数非弹性平均自由程(diimfp)。
The imaginary part of the complex self energy of electron provides spatial and angular dependent differential inverse inelastic mean free path (DIIMFP).
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