中国物理B ›› 2016, Vol. 25 ›› Issue (9): 95202-095202.doi: 10.1088/1674-1056/25/9/095202

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Formation and dissociation of dust molecules in dusty plasma

Jia Yan(闫佳), Fan Feng(冯帆), Fucheng Liu(刘富成), Lifang Dong(董丽芳), Yafeng He(贺亚峰)   

  1. Hebei Key Laboratory of Optic-electronic Information Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • 收稿日期:2016-04-12 修回日期:2016-05-04 出版日期:2016-09-05 发布日期:2016-09-05
  • 通讯作者: Yafeng He E-mail:heyf@hbu.edu.cn
  • 基金资助:

    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, and the Midwest Universities Comprehensive Strength Promotion Project, China.

Formation and dissociation of dust molecules in dusty plasma

Jia Yan(闫佳), Fan Feng(冯帆), Fucheng Liu(刘富成), Lifang Dong(董丽芳), Yafeng He(贺亚峰)   

  1. Hebei Key Laboratory of Optic-electronic Information Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
  • Received:2016-04-12 Revised:2016-05-04 Online:2016-09-05 Published:2016-09-05
  • Contact: Yafeng He E-mail:heyf@hbu.edu.cn
  • Supported by:

    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, and the Midwest Universities Comprehensive Strength Promotion Project, China.

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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.

关键词: dust plasma, dust molecule

Abstract:

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.

Key words: dust plasma, dust molecule

中图分类号:  (Dusty or complex plasmas; plasma crystals)

  • 52.27.Lw
52.27.Gr (Strongly-coupled plasmas)