Chem. J. Chinese Universities ›› 1997, Vol. 18 ›› Issue (6): 943.

• Articles • Previous Articles     Next Articles

The Generation Mechanism of Gaseous [(SiO2)nX]- Clusters

XU Can1, ZHANG Rong-Jun1, ZHU Lei1, ZHAO Li1, QIAN Shi-Xiong1, LI Yu-Fen1, LONG Ying-Cai2   

  1. 1. State Key Joint Laboratory for Materials Modification by Laser, Ion and Electron Beams, Fudan University, Shanghai, 200433;
    2. Department of Physics, Fudan University, Shanghai, 200433
  • Received:1996-06-10 Online:1997-06-24 Published:1997-06-24

Abstract: Many sequences of [(SiO2)nX]-clusters are found under XeCl excimer laser abla-tion of several condensed state SiO2-based materials in the negative channel of the time-of-flight mass spectrometry. The unique roles of the network structure and surface-active groups in laser energy absorptance, transfer and the cluster formation mechanism also have been discussed.

Key words: Laser ablation, Porous network structure, SiO2 cluster, Si-OH groups

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