Concept information
PREFERRED TERM
nucleation particle size spectrometer
DEFINITION
- Instrument designed for measuring the number size distribution of particles in an aerosol sample by exposing the particles to an atmosphere supersaturated with evaporated working liquid, thereby activating them to growth by vapour uptake from the gas phase, and counting them optically. The threshold diameter for particle activation depends on the supersaturation. By svanning through the supersaturation, a number size distribution at nano particle sizes can be infered.
BROADER CONCEPT
NARROWER CONCEPTS
ENTRY TERMS
- NPSS
URI
https://vocabulary.actris.nilu.no/actris_vocab/nucleationparticlesizespectrometer
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