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Paper   IPM / Physic / 7629
School of Physics
  Title:   Cluster Structure Effects on the Interaction of An Ultrashort Intense Laser Field with Large Clusters
1.  B. Shokri
2.  A.R. Niknam
3.  V. Krainov
  Status:   Published
  Journal: Laser Part. Beams
  No.:  1
  Vol.:  22
  Year:  2004
  Pages:   13-18
  Supported by:  IPM
The structure of large clusters such as neutral clusters, metallic clusters, and clusters ion is investigated. Furthermore, the electron distribution of large clusters when they are irradiated by an intense ultrashort laser pulse is treated. The cluster excitation results from the interaction of the electron subsystem with the laser field. Analyzing the quantum metallic cluster proves that its properties differ essentially from the properties of a classical small metallic sphere. The eigen frequency of the surface oscillation of a cluster is obtained and it is shown that it is lower than Mie frequency because of Thomas?Fermi screening.

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