辐射带朗道共振电子的相对论表面过程
Relativistic surfatron process for Landau resonant electrons in radiation belts
摘要：
最近对相对论性粒子非线性波粒相互作用的理论研究表明，当传播角$θ$接近与Hopf-Hopf分岔条件相关联的临界传播角$θ_\textrm{c}$时，朗道共振轨道可以沿着平均背景磁场有效地加速。在这份报告中，我们扩展了以前的研究，以达到更大的建模能力，包括纵波效应和不均匀的磁场的辐射带中的电子的研究。我们发现，即使这两种效应可以限制辐射带中电子的表面加速，在100千电子伏的顺序，发生在10毫秒的顺序的能量增益，是足够强的机制是相关的辐射带动力学。
英文摘要：
Recent theoretical studies of the nonlinear wave-particle interactions for relativistic particles have shown that Landau resonant orbits could be efficiently accelerated along the mean background magnetic field for propagation angles $θ$ in close proximity to a critical propagation $θ_\textrm{c}$ associated with a Hopf--Hopf bifurcation condition. In this report, we extend previous studies to reach greater modeling capacities for the study of electrons in radiation belts by including longitudinal wave effects and inhomogeneous magnetic fields. We find that even though both effects can limit the surfatron acceleration of electrons in radiation belts, gains in energy of the order of 100 keV, taking place on the order of ten milliseconds, are sufficiently strong for the mechanism to be relevant to radiation belt dynamics.
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