INVESTIGADORES
CONDAT Carlos Alberto
artículos
Título:
Steady state in two-dimensional diffusion-controlled reactionsC
Autor/es:
C.A. CONDAT; G.J. SIBONA; C.E. BUDDE
Revista:
JOURNAL OF STATISTICAL PHYSICS
Editorial:
Plenum Publishing Co.
Referencias:
Año: 1997 vol. 89 p. 369 - 377
ISSN:
0022-4715
Resumen:
We investigate the conditions under which a steady state can be reached in a
two-dimensional diffusion-controlled trapping reaction. If there is no interaction
between trap and diffusing particles, the reaction rate decreases monotonically
to zero. Here we show that a logarithmic attractive potential between trap and
diffusing particles leads to a finite steady-state reaction rate. A steady state can
also be reached if the diffusing particles move under the action of a uniform
external field. More unexpectedly, a steady-state rate can be obtained in the
absence of any "assisting field" if the trap grows due to the absorption of the
diffusing particles. The reaction rates are calculated in all cases.