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    STUDIA PHYSICA - Issue no. SPECIAL ISSUE / 2001  
         
  Article:   COLLISIONAL EFFECTS IN INFRARED MULTIPHOTON DISSOCIATION OF SI2F6.

Authors:  V. TOSA.
 
       
         
  Abstract:  The model of McRae et al is used to investigate the effect of laser fluence and collisions in the dissociation of vibrationally excited Si2F6. The parameters of the model are obtained and their dependence on laser fluence is discussed. Vibrational energy pooling mechanism dominates over quenching of vibrational excitation in homogeneous (Si2F6-Si2F6) collisions. Heterogeneous collisions between Si2F6 parent molecule and SiF4 as dissociation product are found to hinder dissociation for low laser fluence and to enhance it, as fluence increases.  
         
     
         
         
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