中国物理B ›› 2004, Vol. 13 ›› Issue (2): 196-200.doi: 10.1088/1009-1963/13/2/013

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Three-dimensional simulation on explosions of hydrogen atomic clusters irradiated by an intense femtosecond laser pulse

夏勇, 刘建胜, 倪国权, 徐至展   

  1. Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2003-05-20 修回日期:2003-08-04 出版日期:2004-02-06 发布日期:2005-07-06
  • 基金资助:
    Project supported by the Special Foundation for State Major Basic Research Program of China(Grant No G1999075200).

Three-dimensional simulation on explosions of hydrogen atomic clusters irradiated by an intense femtosecond laser pulse

Xia Yong (夏勇), Liu Jian-Sheng (刘建胜), Ni Guo-Quan (倪国权), Xu Zhi-Zhan (徐至展)   

  1. Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2003-05-20 Revised:2003-08-04 Online:2004-02-06 Published:2005-07-06
  • Supported by:
    Project supported by the Special Foundation for State Major Basic Research Program of China(Grant No G1999075200).

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摘要： Using classic particle dynamics simulations, the interaction process between an intense femtosecond laser pulse and icosahedral hydrogen atomic clusters H_{13}, H_{55} and H_{147} has been studied. It is revealed that with increasing number of atoms in the cluster, the kinetic energy of ions generated in the Coulomb explosion of the ionized hydrogen clusters increases. The expansion process of the clusters after laser irradiation has also been examined, showing that the expansion scale decreases with increasing cluster size.

关键词: intense femtosecond laser pulse, cluster, icosahedron, Coulomb explosion

Abstract: Using classic particle dynamics simulations, the interaction process between an intense femtosecond laser pulse and icosahedral hydrogen atomic clusters H$_{13}$, H$_{55}$ and H$_{147}$ has been studied. It is revealed that with increasing number of atoms in the cluster, the kinetic energy of ions generated in the Coulomb explosion of the ionized hydrogen clusters increases. The expansion process of the clusters after laser irradiation has also been examined, showing that the expansion scale decreases with increasing cluster size.

Key words: intense femtosecond laser pulse, cluster, icosahedron, Coulomb explosion

中图分类号:  (Diffuse spectra; predissociation, photodissociation)

  • 33.80.Gj
36.40.Jn (Reactivity of clusters)