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| Titel |
An experiment to measure raindrop collection efficiencies: influence of rear capture |
| VerfasserIn |
A. Quérel, P. Lemaitre, M. Monier, E. Porcheron, A. I. Flossmann, M. Hervo |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 7, no. 5 ; Nr. 7, no. 5 (2014-05-19), S.1321-1330 |
| Datensatznummer |
250115759
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| Publikation (Nr.) |
 copernicus.org/amt-7-1321-2014.pdf |
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| Zusammenfassung |
| In the case of severe accident with loss of containment in a nuclear plant,
radionuclides are released into the atmosphere in the form of both gases and
aerosol particles (Baklanov and Sørensen, 2001). The analysis of
radioactive aerosol scavenged by rain after the Chernobyl accident highlights
certain differences between the modelling studies and the environmental
measurements. Part of these discrepancies can probably be attributed to
uncertainties in the efficiencies used to calculate aerosol particle
collection by raindrops, particularly drops with a diameter larger than one
millimetre. In order to address the issue of these uncertainties, an
experimental study was performed to close the gaps still existing for this
key microphysical parameter. In this paper, attention is first
focused on the efficiency with which aerosol particles in the accumulation
mode are collected by raindrops with a diameter of 2 mm. The collection
efficiencies measured for aerosol particle in the sub-micron range are
quantitatively consistent with previous theoretical model developed by
Beard (1974) and thus highlight the major role of rear capture in the
submicron range. |
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