Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
Phys Chem Chem Phys. 2011 Jan 14;13(2):762-78. doi: 10.1039/c0cp00787k. Epub 2010 Nov 1.
Equations of motion for a fast, light rare gas atom passing over a liquid surface are derived and used to infer the dynamics of neon collisions with squalane and perfluorinated polyether surfaces from experimental data. The equations incorporate the local mode model of a liquid surface via a stochastic process and explicitly account for impulsive collisional energy loss to the surface. The equations predict angular distributions for scattering of neon that are in good quantitative agreement with experimental data. Our key dynamical conclusions are that experimental angular distributions derive mainly from local mode surface topography rather than from structural features of individual surface molecules, and that the available data for these systems can be accounted for almost exclusively by single collisions between neon atoms and the liquid surface.
推导了快速轻稀有气体原子掠过液体表面的运动方程，并将其用于从实验数据推断氖与 squalane 和全氟聚醚表面的碰撞动力学。该方程通过随机过程结合了液体表面的局部模式模型，并明确考虑了对表面的脉冲碰撞能量损失。该方程预测了氖散射的角分布，与实验数据吻合良好。我们的关键动力学结论是，实验角分布主要源于局部模式表面形貌，而不是单个表面分子的结构特征，并且这些系统的可用数据几乎可以完全由氖原子与液体表面之间的单次碰撞来解释。
