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| Titel |
Cluster activation theory as an explanation of the linear dependence between formation rate of 3nm particles and sulphuric acid concentration |
| VerfasserIn |
M. Kulmala  , K. E. J. Lehtinen, A. Laaksonen |
| 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 ; 6, no. 3 ; Nr. 6, no. 3 (2006-03-10), S.787-793 |
| Datensatznummer |
250003522
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| Publikation (Nr.) |
 copernicus.org/acp-6-787-2006.pdf |
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| Zusammenfassung |
| According to atmospheric observations new particle formation seems to be a
function of sulphuric acid concentration to the power from one to two. The
nucleation theorem then predicts that the critical cluster contains one to
two sulphuric acid molecules. However, existing nucleation theories predicts
that the power is more (or equal) than 2. Here we present an activation
theory, which can explain the observed slope. In cluster activation the
clusters containing one sulphuric acid molecule will activate for further
growth due to heterogeneous nucleation, heterogeneous chemical reactions
including polymerization or activation of soluble clusters. In the
activation process organic vapours are typically needed as condensing
agents. |
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