Effect of an Electric Field on the Structure and Stability of Atmospheric Clusters
Christopher David Daub, Theo Kurtén
TL;DR
This paper explores how electric fields affect atmospheric clusters, which are important in new particle formation.
Contribution
The study reveals that low electric fields minimally affect cluster stability, while higher fields cause significant structural and energetic changes.
Findings
Low electric fields (|E| ≤ 0.01 V Å–1) have minimal impact on cluster association energy (<0.5 kcal mol–1).
Higher electric fields (|E| > 0.2 V Å–1) induce significant structural and energetic changes in clusters.
Such effects are relevant in experimental settings like near interfaces or in intense laser fields.
Abstract
We study the influence of an applied electric field on the structure and stability of some common bimolecular clusters that are found in the atmosphere. These clusters play an important role in new particle formation (NPF). For low values of the electric field (i.e., |E| ≤ 0.01 V Å–1), we demonstrate that the field response of the clusters can be predicted from simply calculating the dipole moment of the cluster and the dipole moments of the constituent molecules and that the influence on the association energy of the cluster is minimal (i.e., <0.5 kcal mol–1). For higher field strengths |E| > 0.2 V Å–1, there can be more dramatic effects on both structure and energetics, as the induced dipole, charge transfer, and geometric distortion play a larger role. Although such large fields are not very relevant in the atmosphere, they do exist in some situations of experimental interest, such…
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Taxonomy
TopicsAtmospheric chemistry and aerosols · Magnetic and Electromagnetic Effects · Laser-induced spectroscopy and plasma