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摘要翻译：
我们建议用一个复杂的动力学反射过程来重新讨论Knudsen区中原子的扩散。通过分子动力学模拟，我们强调了余弦反射定律在原子尺度上的渐近性质，并仔细分析了反射事件中由此产生的强关联。本文还提出了与壁面滑移相关的相合系数的动力学解释。最后，我们证明了反射随机过程的前两阶矩不均匀地依赖于入射角。
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英文标题：
《The cosine law at the atomic scale: Toward realistic simulations of
Knudsen diffusion》
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作者：
Franck Celestini (LPMC), Fabrice Mortessagne (LPMC)
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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一级分类：Physics 物理学
二级分类：Chaotic Dynamics 混沌动力学
分类描述：Dynamical systems, chaos, quantum chaos, topological dynamics, cycle expansions, turbulence, propagation
动力系统，混沌，量子混沌，拓扑动力学，循环展开，湍流，传播
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英文摘要：
We propose to revisit the diffusion of atoms in the Knudsen regime in terms of a complex dynamical reflection process. By means of molecular dynamics simulation we emphasize the asymptotic nature of the cosine law of reflection at the atomic scale, and carefully analyze the resulting strong correlations in the reflection events. A dynamical interpretation of the accomodation coefficient associated to the slip at the wall interface is also proposed. Finally, we show that the first two moments of the stochastic process of reflection non uniformly depend on the incident angle.
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PDF链接：
https://arxiv.org/pdf/708.1117
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