银原子在液体基底上的凝聚特性  

AGGREGATION CHARACTERISTICS OF SILVER ATOMS DEPOSITED ON LIQUID SUBSTRATES 

作　　者：叶高翔[1] 杨波[1] 夏阿根[1] 金进生[1] 罗孟波[1] 许健民[1] 

机构地区：[1]杭州大学物理系

出　　处：《物理学报》1998年第11期1900-1905,共6页Acta Physica Sinica

基　　金：国家自然科学基金;浙江省青年人才基金

摘　　要：研究了沉积在液体基底表面上的银原子的扩散和凝聚特性．实验结果表明：银原子在液体表面先形成准圆形的团族，然后通过无规扩散而逐渐凝聚成具有分枝状的凝聚体．准圆形团簇的平均半径以及凝聚速率均随沉积速率的变化而变化．还提出了一个凝聚速率概率模型，计算结果与凝聚速率的实验曲线相符合．Abstract The diffusion and aggregation characteristics of silver atoms deposited on liquid substrates are studied. Experimental results indicate that the silver atoms first form compact clusters. Then the clusters diffuse and aggregate on the liquid surfaces. Finally they shape into ramified aggregates. We find that both the average radius of the compact clusters and the aggregation rate depend on the deposition rate. An aggregation rate possibility model is established and the theoretical result is in good agreement with the experimental data.

关 键 词：凝聚态 凝聚速率 银原子 液体基底 凝聚特性 

分 类 号：O4[理学—物理]