The diffusion tube; a cloud condensation nucleus counter for use below 0.3% supersaturation
A new cloud condensation nucleus counter has been developed which is shown to be capable of producing supersaturations between 0.040 (± 0.010)% and 0.30(± 0.075)% in a simple and reliable manner. A unique system for assessing the supersaturation and for distinguishing the CCN is described. The latte...
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| Published in | Journal of aerosol science Vol. 13; no. 4; pp. 297 - 319 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
1982
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| Online Access | Get full text |
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| Summary: | A new cloud condensation nucleus counter has been developed which is shown to be capable of producing supersaturations between 0.040 (± 0.010)% and 0.30(± 0.075)% in a simple and reliable manner. A unique system for assessing the supersaturation and for distinguishing the CCN is described. The latter is necessary because the available growth time is short ( ∼ 12 sec). A comparison of experimental results with numerical analysis of droplet growth by diffusion for the condensation coefficient valued at 0.032 and 0.32 suggests that α
c lies between these two figures. We estimate its value at about 0.1, but it is subject to large error limits. |
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| ISSN: | 0021-8502 1879-1964 |
| DOI: | 10.1016/0021-8502(82)90032-5 |