X-ray & neutron spectroscopy, scattering, and imaging in atmospheric chemistry

Session

Liquids and liquid interfaces

14 Nov 2024, 11:20

OSGA/EG6 (Paul Scherrer Institut)

Conveners

Liquids and liquid interfaces

• Thorsten Bartels-Rausch (PSI - Paul Scherrer Institut)

Liquids and liquid interfaces

• Thorsten Bartels-Rausch (PSI - Paul Scherrer Institut)

5. Studying droplet and thin film oxidation at large-scale facilities

Christian Pfrang

14/11/2024, 11:20

The presentation with give an overview of our recent work at X-ray and neutron facilities focussing mainly on droplets and thin films of atmospheric importance including ageing processes and phase changes.

15. Towards the investigation of heterogeneous reactions at liquid-vapor interfaces

Hendrik Bluhm (Fritz Haber Institut)

14/11/2024, 11:40

24. XPS on aqueous droplet model solutions

Nonne Prisle (University of Oulu)

14/11/2024, 12:10

I will present results of highly surface sensitive and chemically sensitive XPS experiments on liquid microjet aqueous samples as models for atmospheric aqueous aerosols and cloud droplets. I will present examples of further application of the results from XPS experiments to atmospheric modeling. I will discuss prospects for similar experiments on micro-droplets.

23. Investigation into the fate of organic films extracted from atmospheric particulate matter at the air-water interface in the presence of gaseous SO2

Stephanie Jones (Karlsruhe Institute of Technology)

14/11/2024, 12:20

Neutron reflectometry was used to study the interaction of gaseous SO2 and organic films at the air-water interface to determine whether a reaction occurred, resulting in a product film, or, removal of the film from the interface. Three different organic films extracted from particulate matter sampled from different atmospheric environments (woodland, urban, and wood smoke) and two pure proxy...

19. X-ray scattering on supercooled water and amorphous ice

Katrin Amann-Winkel (University Mainz & Max-Planck Institute for Polymer Research)

15/11/2024, 09:00

"Unravelling the fundamental properties of water and water´s phase diagram is highly relevant for our understanding of water in our environment. Moreover, amorphous ice was predicted to occur under summer mesospheric conditions, prior to crystallising into hexagonal ice. Since the discovery of two distinct amorphous states of ice with different density (high- and low-density amorphous ice, HDA...

13. Electrodynamics of water under extreme confinement within clays

Vasily Artemov (EPFL - EPF Lausanne)

15/11/2024, 09:20

I will discuss the experimental electrodynamics, electrical conductivity, and dielectric properties of water confined between clay nanocrystals within nanometer-scale slit channels. I will highlight how ionic and molecular transport are influenced by clay type, humidity, pressure, and electrolyte concentration. These findings have significant implications for natural phenomena such as...