Unipolar Diffusion Charging of Aerosol Particles at Low Pressure
Open Access
- 1 January 1991
- journal article
- research article
- Published by Taylor & Francis in Aerosol Science and Technology
- Vol. 15 (1) , 60-68
- https://doi.org/10.1080/02786829108959513
Abstract
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 α-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.Keywords
This publication has 11 references indexed in Scilit:
- Measurements of charge on submicron particles generated in a sputtering processJournal of Applied Physics, 1990
- Unipolar Diffusion Charging of Ultrafine AerosolsAerosol Science and Technology, 1988
- Diffusion charging of ultrafine aerosol particles by positive helium, argon, and nitrogen ionsJournal of Applied Physics, 1987
- A New Generator for Ultrafine Aerosols Below 10 nmAerosol Science and Technology, 1987
- Ion—Aerosol Attachment Coefficients and the Steady-State Charge Distribution on Aerosols in a Bipolar Ion EnvironmentAerosol Science and Technology, 1986
- Unipolar and bipolar diffusion charging of ultrafine aerosol particlesJournal of Aerosol Science, 1985
- Bipolar diffusion charging of aerosol particles—I: experimental results within the diameter range 4–30 nmJournal of Aerosol Science, 1983
- Precipitation of unipolarly charged particles in cylindrical and spherical vesselsJournal of Aerosol Science, 1977
- Diffusion Charging of Aerosol Particles at Low PressuresJournal of Applied Physics, 1967
- On the stationary charge distribution on aerosol particles in a bipolar ionic atmosphereGeofisica pura e applicata, 1963