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Phys. Rev. A 46, R6121–R6123 (1992)

Diffusion-reaction kinetics for A+B(static)→C(inert) for one-dimensional systems with initially separated reactants

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Hernan Larralde and Mariela Araujo
Center for Polymer Studies, Boston University, Boston, Massachusetts 02215
Department of Physics, Boston University, Boston, Massachusetts 02215

Shlomo Havlin
Center for Polymer Studies, Boston University, Boston, Massachusetts 02215
Department of Physics, Boston University, Boston, Massachusetts 02215
Department of Physics, Bar-Ilan University, Ramat-Gan, Israel

H. Eugene Stanley
Center for Polymer Studies, Boston University, Boston, Massachusetts 02215
Department of Physics, Boston University, Boston, Massachusetts 02215

Received 29 June 1992; published in the issue dated November 1992

We study analytically and numerically the reaction kinetics for diffusion-limited reactions of the type A+B(static)→C(inert) in one-dimensional systems with reactants initially separated in space. We find expressions for the concentration profiles for each species, and for the reaction front. The width of the front is characterized by wtα with α=1/4, and its height by ht with β=3/4; these values differ from the ‘‘mean-field’’ exponents and those obtained when both species diffuse.

© 1992 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.46.R6121
DOI:
10.1103/PhysRevA.46.R6121
PACS:
05.40.+j