宇宙射线分数扩散模型的漏盒近似
Leaky-box approximation to the fractional diffusion model of cosmic rays
摘要：
比较了漏箱近似下宇宙线反常扩散的两种模型：一种是基于时空解耦的Lévy飞行模型，另一种是基于有限自由运动速度的分数步走模型.计算了首次通过时间和路径的分布，并给出了扩散包向平衡态的演化过程。计算结果表明，两种模型有本质的区别：耦合格式的计算结果更符合实际。
英文摘要：
Two models of anomalous diffusion of cosmic ray in the leaky-box approximation are compared: one of them is based on the decoupled time-space Lévy flights and the other on fractional walks with a finite free motion velocity. Distributions of first passage time and paths are computed and evolution of diffusion packets to equilibrium state is shown. Calculations demonstrate essential difference between the two models: the coupled scheme gives more realistic results.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
