The role of ions in condensation particle counting for particle diameters below 2nm

Autor(en)

Paul Winkler, Aron Vrtala, Paul Wagner

Abstrakt

Condensation particle counting for particle diameters below 2 nm may be influenced by the simultaneous presence of ions depending on the experimental procedure. Neutralization of electrostatically classified aerosols by means of a 241Am bipolar diffusion charger causes comparatively high number concentrations of positive and negative ions which enter the measuring chamber simultaneously to the particle species of interest. In this paper we illustrate how the presence of ions influences the measured particle number concentration and how a removal of ions allows to measure number concentration of seed particles correctly.

Organisation(en)

Aerosolphysik und Umweltphysik

Seiten

73-77

Anzahl der Seiten

5

DOI

https://doi.org/10.1007/978-1-4020-6475-3_14

Publikationsdatum

2007

ÖFOS 2012

103020 Oberflächenphysik, 105204 Klimatologie, 210006 Nanotechnologie, 103029 Statistische Physik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/84825397-c63a-46cb-8293-f2fd63bb5419