Figure 3: The effect of ions.
From: The effect of acid–base clustering and ions on the growth of atmospheric nano-particles
The growth enhancement factor (GEF) due to the presence of ions in the chamber as a function of diameter in different systems. The GEF was determined as the ratio of the growth rate of the total particle population in a charged run and an identical neutral run. Each data point is at the mean value of all the experiments for which the GEF was possible to determine for the given system. Error bars give the s.e.m. The black line shows the case with no growth enhancement. Note that the magnitude of the enhancement is also dependent on the charged fraction of the particle population.
