Effect of diffusion losses on the size growth of nano particles by coagulation

The size growth rate of aerosol particles by Brownian coagulation is significantly reduced in the case of nanometer-sized particles, for which deposition losses are extremely high. A sampled model,assuming that the coagulation rate constant and the deposition loss rate constant are both independent of particle size, is proposed. The size growth rate reduction predicted by the model is in very good agreement with the experimental results. (Author) 5 refs