Condensation particle counter

A condensation particle counter or CPC is a particle counter that detects and counts small particles by first enlarging them by using the particles to create droplets in a supersaturated gas. ^[1]

Three techniques have been used to produce nucleation:

Adiabatic expansion using an expansion chamber. This was the original technique used by John Aitken in 1888. ^[2]
Thermal diffusion.
Mixing of hot and cold gases. ^[1]

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References

^ ^a ^b Aerosol Measurement: Principles, Techniques, and Applications, edited by Pramod Kulkarni, Paul A. Baron, Klaus Willeke, p384, [1] retrieved 15 May 2012
^ Kulkarni, Baronand and Willeke, p381

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[KIW-1] Aerosol Measurement: Principles, Techniques, and Applications, edited by Pramod Kulkarni, Paul A. Baron, Klaus Willeke, p384, [1] retrieved 15 May 2012

[2] Kulkarni, Baronand and Willeke, p381

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