Chin. Phys. Lett.  2006, Vol. 23 Issue (3): 720-723    DOI:
Original Articles |
Pregelation Behaviour of Coagulation Processes with the Constant-Reaction-Number Kernel
KE Jian-Hong1,2;LIN Zhen-Quan1;CHEN Xiao-Shuang2
1School of Physics and Electronic Information, Wenzhou University, Wenzhou 325027 2National Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083
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KE Jian-Hong, LIN Zhen-Quan, CHEN Xiao-Shuang 2006 Chin. Phys. Lett. 23 720-723
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Abstract We propose an irreversible binary coagulation model with a constant-reaction-number kernel, in which, among all the possible binary coagulation reactions, only p reactions are permitted to take place at every time. By means of the generalized rate equation we investigate the kinetic behaviour of the system with the reaction rate kernel K(i;j)=(ij)ω (0≤ ω <1/2), at which an i-mer and a j-mer coagulate together to form a large one. It is found that for such a system there always exists a gelation transition at a finite time tc, which is in contrast to the ordinary binary coagulation with the same rate kernel. Moreover, the pre-gelation behaviour of the cluster size distribution near the gelation point falls in a scaling regime and the typical cluster size grows as (tc-t)-1/(1-2ω). On the other hand, our model can also provide some predictions for the evolution of the cluster distribution in multicomponent complex networks.
Keywords: 82.20.-w      68.43.Jk      89.75.Da     
Published: 01 March 2006
PACS:  82.20.-w (Chemical kinetics and dynamics)  
  68.43.Jk (Diffusion of adsorbates, kinetics of coarsening and aggregation)  
  89.75.Da (Systems obeying scaling laws)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I3/0720
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