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| Titel |
Negatively charged nanoparticles produced by splashing of water |
| VerfasserIn |
H. Tammet, U. Hõrrak, M. Kulmala  |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 9, no. 2 ; Nr. 9, no. 2 (2009-01-16), S.357-367 |
| Datensatznummer |
250006731
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| Publikation (Nr.) |
 copernicus.org/acp-9-357-2009.pdf |
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| Zusammenfassung |
| The production of splashing-generated balloelectric intermediate ions was
studied by means of mobility spectrometry in the atmosphere during the rain
and in a laboratory experiment simulating the heavy rain. The partial
neutralization of intermediate ions with cluster ions generated by beta rays
suppressed the space charge of intermediate ions but preserved the shape of
the mobility distribution. The balloelectric ions produced from the
waterworks water of high TDS (Total Dissolved Solids) had about the same
mobilities as the ions produced from the rainwater of low TDS. This suggests
that the balloelectric ions can be considered as singly charged water
nanoparticles. By different measurements, the diameter mode of these
particles was 2.2–2.7 nm, which is close to the diameter of 2.5 nm of the
Chaplin's 280-molecule magic icosahedron superclusters. The measurements can
be explained by a hypothesis that the pressure of saturated vapor over the
nanoparticle surface is suppressed by a number of magnitudes due to the
internal structure of the particles near the size of 2.5 nm. The records of
the concentration bursts of balloelectric ions in the atmosphere are
formally similar to the records of the nucleation bursts but they cannot be
qualified as nucleation bursts because the particles are not growing but
shrinking. |
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