Bonn 2025 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 23: Cluster and Nanoparticles I (joint session MO/A)

MO 23.2: Vortrag

Donnerstag, 13. März 2025, 11:30–11:45, HS XV

Imaging single sea salt aerosol nanoparticles — •Changji Pan for the Sea Salt Nanoparticle collaboration — Department of Physics, ETH Zurich, 8093, Zurich Switzerland

The influence of sea salt aerosol particles on atmospheric processes highly depends on their hygroscopicity and capacity as cloud condensation nuclei. These properties are highly related to the particle morphology and the distribution of chemical species inside these nanoparticles. Many studies, however, suffer from the averaging effect in ensemble measurements and the substrate interaction in deposited particles. We performed a direct measurement on in-flight individual sea salt aerosol nanoparticles by single-shot X-ray diffraction imaging at EuXFEL, to retrieve their inner structure and overall morphology as a function of particle size, chemical composition, and humidity.

Keywords: Aerosol Nanoparticle; Coherent Diffraction Imaging