Formation and dissociation of dust molecules in dusty plasma  

作　　者：闫佳 冯帆 刘富成 董丽芳 贺亚峰 

机构地区：[1]Hebei Key Laboratory of Optic-electronic Information Materials,College of Physics Science and Technology,Hebei University

出　　处：《Chinese Physics B》2016年第9期411-414,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11205044 and 11405042);the Natural Science Foundation of Hebei Province,China(Grant Nos.A2011201006 and A2012201015);the Research Foundation of Education Bureau of Hebei Province,China(Grant No.Y2012009);the Program for Young Principal Investigators of Hebei Province,China;the Midwest Universities Comprehensive Strength Promotion Project,China

摘　　要：Dust molecules are observed in a dusty plasma experiment.By using measurements with high spatial resolution,the formation and dissociation of the dust molecules are studied.The ion cloud in the wake of an upper dust grain attracts the lower dust grain nearby.When the interparticle distance between the upper dust grain and the lower one is less than a critical value,the two dust grains would form a dust molecule.The upper dust grain always leads the lower one as they travel.When the interparticle distance between them is larger than the critical value,the dust molecule would dissociate.Dust molecules are observed in a dusty plasma experiment.By using measurements with high spatial resolution,the formation and dissociation of the dust molecules are studied.The ion cloud in the wake of an upper dust grain attracts the lower dust grain nearby.When the interparticle distance between the upper dust grain and the lower one is less than a critical value,the two dust grains would form a dust molecule.The upper dust grain always leads the lower one as they travel.When the interparticle distance between them is larger than the critical value,the dust molecule would dissociate.

关 键 词：dust plasma dust molecule 

分 类 号：O53[理学—等离子体物理] O561.3[理学—物理]