Unipolar diffusion charging of aerosol particles at low pressure
Journal Article
·
· Aerosol Science and Technology; (United States)
- Univ. of Minnesota, Minneapolis (United States)
- Research Inst. for Advanced Science and Tech., Osaka (Japan)
Experiments of unipolar diffusion charging of ultrafine aerosol particles (10-50 nm) at low pressure (0.2-0.5 atm) were performed. Aerosol charging was achieved using a novel unipolar charger which made use of a low-intensity {alpha}-ray radioactive source. The results of the experiments were compared with numerical solutions to the fundamental equations of charging. The Fuchs' limiting-sphere charging theory in the transition regime was used for the calculation of the combination coefficients between ions and particles. Good agreement was found between experimental results and numerical predictions of the charged fraction as a function of particle diameter.
- OSTI ID:
- 5706650
- Journal Information:
- Aerosol Science and Technology; (United States), Journal Name: Aerosol Science and Technology; (United States) Vol. 15:1; ISSN 0278-6826; ISSN ASTYD
- Country of Publication:
- United States
- Language:
- English
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