Issue 36, 2009

Spectroscopic evidence for cyclical aggregation and coalescence of molecular aerosol particles

Abstract

Developments in understanding the relationship of FTIR spectra of molecular aerosols to the shapes of aerosol particles are exploited to analyze the stages by which such particles mature as a function of time as observed at a series of fixed low temperatures. Based on recent advances from exciton modeling and new molecular-dynamics simulations, two sequential maturation cycles of CO2 particles in He(g) are identified by data obtained between 35 and 100 K. Observation of the stages of these cycles, which include particle aggregation, sintering and ultimately coalescence to a “globular” form, also provides a basis for the concept that the formation of an aerosol from dilute co-mixtures of CO2 and H2O in a carrier gas may lead to nucleation and isolation of primary CO2 particles on aggregates of water–ice particles.

Graphical abstract: Spectroscopic evidence for cyclical aggregation and coalescence of molecular aerosol particles

Article information

Article type
Paper
Submitted
11 Mar 2009
Accepted
13 May 2009
First published
10 Jun 2009

Phys. Chem. Chem. Phys., 2009,11, 7819-7825

Spectroscopic evidence for cyclical aggregation and coalescence of molecular aerosol particles

J. P. Devlin, C. A. Yinnon and V. Buch, Phys. Chem. Chem. Phys., 2009, 11, 7819 DOI: 10.1039/B905018N

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements