Heteromolecular condensation theory applied to particle growth

The growth of aqueous sulfuric acid droplets originating from a heteromolecular nucleation process is calculated for particle sizes up to 1000 Å. Two cases are discussed: (1) there exists a given initial concentration of a condensable trace gas, and (2) there exists a constant production rate of a condensable trace gas. The particle growth and the final particle size are calculated as functions of relative humidity from 10 to 99 per cent. Our previous studies on heteromolecular nucleation (Kiang et al., 1973) as applied to gas to particle conversion are extended to the particle growth process and found to agree roughly with experiments by Cox (1973).