Göttingen 2025 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 10: Poster Session I
P 10.9: Poster
Dienstag, 1. April 2025, 16:15–18:15, ZHG Foyer 1. OG
Diagnostic capabilities of Setup for Imaging of Radicials Interacting with Surfaces (IRIS) — •Robin Minke1, Robin Labenski1, Marc Böke2, Achim von Keudell2, and Judith Golda1 — 1Plasma Interface Physics, Ruhr-University Bochum — 2Experimental Physics II, Ruhr-University Bochum
The novel field of plasma catalysis involves complex chemistry, making it difficult to identify the underlying causes and effects between catalysts and plasma. Methods are needed to isolate specific processes to understand their contribution in the overall chemistry. To enhance the insight of how plasma-generated molecules interact with surfaces, a low-pressure chamber setup for Imaging of Radicals Interacting with Surfaces (IRIS) has been developed. In this setup, radicals produced by an ECR discharge are accelerated through a differential chamber into the main chamber, forming a molecular particle beam that collides with a substrate surface. Spatially resolved Laser-Induced Fluorescence (LIF) is employed to monitor the density of a chosen radical species in the incoming and outgoing beam, revealing insights into its surface chemistry. The substrate temperature can be controlled between 300 and over 1000 K, making this setup ideal for studying the interplay between molecules and temperature-driven catalysts. Providing the diagnostic capabilities of the setup, using OH molecules is a starting point for the study of other molecules and their interactions with different substrate surfaces.
Keywords: catalysis; surface interaction