Funding: The Swedish Research Council (VR)

Objectives: We perform laboratory experiments to understand the reactions taking place on surfaces of e.g. ice, carbon, and salt in the atmosphere. The specific goals include:

1. characterize surface properties of ice particles under atmospheric conditions (probed by elastic helium scattering),

2. study reactive gas-particle interactions of relevance to the chemistry in the stratosphere and troposphere,

3. study island formation and clustering on carbon and salt surfaces.

Description: A molecular beam apparatus is used to study processes on solid surfaces. A molecular beam is directed towards a surface, and the molecular flux from the surface is detected by mass spectrometry. The apparatus allows us to study processes on ice surfaces up to ~ 200 K; temperatures where an ice surface is highly dynamic. Recent and ongoing projects include formation of water and water-ammonia ice on graphite, reactions and surface processes of NO, NO 2 , N 2 O 4 , and N 2 O 5 on ice.

Staff working within this project

Jan Pettersson, Professor

Patrik Andersson, Assistant Professor

Liza Romero Lejonthun, Ph. D. Student

Collaborators