Inert gas pressure-dependent arrangement of condensation zone border. (a) Low inert gas pressure. An imaginary outer boundary of the condensation zone is beyond the vacuum chamber. A deposited particle size grows with increasing the inert gas pressure. (b) High inert gas pressure. The outer boundary of the condensation zone is within the vacuum chamber. A deposited particle size does not practically change with increasing the inert gas pressure. (1) Evaporator; (2) vacuum chamber; (3) inner boundary of the condensation zone; (4) imaginary (left) or real (right) outer boundary of the condensation zone; (5) aerosol particles; (6) clusters; (7) gas convection flows; (8) electrodes.