 |
| Titel |
On the derivation of particle nucleation rates from experimental formation rates |
| VerfasserIn |
A. Kürten, C. Williamson, J. Almeida, J. Kirkby, J. Curtius |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 8 ; Nr. 15, no. 8 (2015-04-17), S.4063-4075 |
| Datensatznummer |
250119652
|
| Publikation (Nr.) |
 copernicus.org/acp-15-4063-2015.pdf |
|
|
|
|
|
| Zusammenfassung |
| Particle formation rates are usually measured at sizes larger than the
critical size at which nucleation occurs. Due to loss of particles during their
growth to the detection threshold, the measured formation rate is often
substantially lower than the nucleation rate. For this reason a correction
needs to be applied in order to determine the nucleation rate from the
measured formation rate. Analytical formulae for the correction factor are
provided in the literature. However, these methods were derived for
atmospheric nucleation measurements and therefore need to be adjusted in
order to be applied to chamber nucleation studies. Here we propose an
alternative, numerical method that allows precise nucleation rates to be
determined in arbitrary experimental environments. The method requires
knowledge of the particle size distribution above detection threshold, the
particle growth rate, and the particle loss rates as a function of particle
size. The effect of self-coagulation, i.e., cluster–cluster collisions, is
taken into account in the method. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|