ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
We introduce a simplified stochastic model for the A+B2 surface reaction with diffusion of the monomer particle. We use a stochastic description which consists only of an autonomous differential equation system with four variables (the coverage of A and B and the corresponding pairs). The solution of this system is a straightforward process. We compare the values of the phase transition points with a much more complex stochastic ansatz which has been introduced earlier [Mai, Kuzovkov, and von Niessen, J. Chem. Phys. 100, 6073 (1994)]. We find good agreement in the prediction of the first-order phase transition with the complete treatment. The ansatz also gives the second-order transition, but the results are not quantitative in the neighborhood of the second-order phase transition.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.466751
