The role of space fluctuations in kinetics of recombination of charged particles

The process of aggregation of charged particles generated by the external s ource and subsequent kinetics of their recombination after switching off an external source (reaction A + B --> 0) was studied. it was shown that the three-dimensional Coulomb interaction suppresses the aggregation of particl es and the concentration decay after switching off the source corresponds t o the law of formal kinetics t(-l). In two dimension the Coulomb interactio n is sufficiently weak and it is unable to suppress completely the aggregat ion of particles. The concentration law after switching off the source is t (-1/3). This analytical result was confirmed by numerical simulation. (C) 2 000 Elsevier Science B.V.. All rights reserved.