中国物理B ›› 2003, Vol. 12 ›› Issue (8): 856-860.doi: 10.1088/1009-1963/12/8/307

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Investigation of the time characteristics of a pulsed flow of large rare gas clusters

刘丙辰1, 倪国权1, 徐至展1, 李邵辉2   

  1. (1)Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; (2)Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Department of Physics, Shantou University, Shantou 515063, China
  • 收稿日期:2003-01-14 修回日期:2003-02-17 出版日期:2003-08-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 29890210), the National Basic Research Special Foundation (Grant No G1999075200), Shanghai Foundation of Science & Technology (Grant No 0159nm022), and the Department of Physi

Investigation of the time characteristics of a pulsed flow of large rare gas clusters

Li Shao-Hui (李邵辉)ab, Liu Bing-Chen (刘丙辰)a, Ni Guo-Quan (倪国权)a, Xu Zhi-Zhan(徐至展)a   

  1. a Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; b Department of Physics, Shantou University, Shantou 515063, China
  • Received:2003-01-14 Revised:2003-02-17 Online:2003-08-16 Published:2005-03-16
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 29890210), the National Basic Research Special Foundation (Grant No G1999075200), Shanghai Foundation of Science & Technology (Grant No 0159nm022), and the Department of Physi

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摘要： The time characteristics of a flow of large rare gas atomic clusters formed by supersonic expansion of a gas into vacuum through conic nozzles are studied using the time resolving Rayleigh scattering method. The results show a two-region structure of the time resolved spectrum of the scattered light from the clusters. The average cluster size in the second region is much, even orders of magnitude, larger than that in the first one. Three designs of the valve-nozzle assembly have been used to investigate the origin of this finding. Finally, the potential application of the observation is proposed.

关键词: atomic clusters, Rayleigh scattering, two-region structure

Abstract: The time characteristics of a flow of large rare gas atomic clusters formed by supersonic expansion of a gas into vacuum through conic nozzles are studied using the time resolving Rayleigh scattering method. The results show a two-region structure of the time resolved spectrum of the scattered light from the clusters. The average cluster size in the second region is much, even orders of magnitude, larger than that in the first one. Three designs of the valve-nozzle assembly have been used to investigate the origin of this finding. Finally, the potential application of the observation is proposed.

Key words: atomic clusters, Rayleigh scattering, two-region structure

中图分类号:  (Flow phenomena in quasi-one-dimensional systems)

  • 47.60.-i
36.40.Mr (Spectroscopy and geometrical structure of clusters) 47.40.Ki (Supersonic and hypersonic flows)