CRITICAL EXPONENTS FOR THE IRREVERSIBLE SURFACE-REACTION A PLUS B -] AB WITH B DESORPTION ON HOMOGENEOUS AND FRACTAL MEDIA

被引:69
作者
ALBANO, EV
机构
[1] Instituto de Investigaciones Fisicoquímicas Tericas y Aplicadas (INIFTA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, (1900) La Plata
关键词
D O I
10.1103/PhysRevLett.69.656
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A model for the surface reaction A + B --> AB with B desorption exhibits a continuous irreversible phase transition from an A-poisoned state to a reactive regime. At criticality, an empty patch embedded in the poisoned state spreads on the sample following a random-walk diffusion behavior. So, a relationship between dynamic exponents of the reaction process, the random-walk exponent, and the fractal dimension of the substrate is conjectured and tested.
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页码:656 / 659
页数:4
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