Pitch angle and energy diffusion coefficients from resonant interactions with ion–cyclotron and whistler waves
Pitch angle and energy diffusion coefficients from resonant interactions with ion–cyclotron and whistler waves
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DOI：
10.1017/s002237780002537x
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发表时间：
1974-12
影响因子：
2.5
通讯作者：
L. Lyons
中科院分区：
文献类型：
--
作者：
L. Lyons
准线性扩散系数的俯仰角和能量的一般关系适用于共振粒子与离子回旋和哨声波的相互作用。扩散系数的表达式，适用于任何分布的波能量与频率和波的法线角，推导和归一化为独立的环境磁场强度和电子密度。结果表明，如何共振粒子扩散率随俯仰角和能量，以及如何扩散率取决于波能量的分布。
General relations for quasi-linear diffusion coefficients in pitch angle and energy are applied to resonant particle interactions with ion–cyclotron and whistler waves. Expressions for the diffusion coefficients, valid for any distribution of wave energy with frequency and wave normal angle, are derived and normalized to be independent of the ambient magnetic field intensity and the electron density. The results illustrate how resonant particle diffusion rates vary with pitch angle and energy, and how the diffusion rates depend upon the distribution of wave energy.