ten Bosch A
Laboratoire de Physique de la Matière Condensée, CNRS 6622, Parc Valrose, F-06108 Nice Cedex 2, France.
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Apr;67(4 Pt 1):041602. doi: 10.1103/PhysRevE.67.041602. Epub 2003 Apr 21.
The dynamics of single particles in a cluster on condensation from the supersaturated vapor phase is studied by a kinetic approach. An insight into the distinctive flow field in the vicinity of a cluster is obtained for initial and late stage evolution. Inside the core the single atoms diffuse freely and the initial velocity decays rapidly with time. In the interfacial region between the cluster core and the vapor, the surface pressure produces a directed radial motion and a long time radial drift into the cluster core. Far from the cluster, the atoms move in the vapor state of low density and high diffusion constant. The mean square displacement and the velocity correlation lend support to the results and are compared with recent molecular dynamics simulations on a nucleating argon cluster.
通过动力学方法研究了过饱和气相中团簇上单个粒子的凝聚动力学。对于初始和后期演化，深入了解了团簇附近独特的流场。在核心内部，单个原子自由扩散，初始速度随时间迅速衰减。在团簇核心与气相之间的界面区域，表面压力产生定向径向运动以及长时间向团簇核心的径向漂移。远离团簇时，原子以低密度和高扩散常数的气相状态移动。均方位移和速度相关性支持了这些结果，并与最近关于成核氩团簇的分子动力学模拟进行了比较。
