Plasma Diagnostics Laboratory
Research activities in the cross-sectional Plasma Diagnostics department focus on investigations into process understanding, particularly in molecular plasma processes. The focus here is on the time- and spatially-resolved qualitative and quantitative chemical analysis of molecular plasmas. Specially equipped laboratories for the diagnostics of chemical plasma processes simulated in practice with state-of-the-art measuring equipment, in particular laser-based plasma diagnostics, are available for the investigations.
Plasma diagnostics allows the absolute measurement of energy and temperature distributions as well as densities of stable and transient species in plasma using absorption spectroscopy and optical emission spectroscopy. In 2019, the new plasma diagnostics application laboratory was founded with a focus on atmospheric pressure plasma sources. In this laboratory, various diagnostics are bundled in one place to provide a central point of contact for the characterization of atmospheric pressure plasmas.
The following methods are used in the laboratories of the plasma diagnostics department to quantitatively determine important parameters such as species densities and their temperatures, the energy distribution of charged particles and to characterize all relevant chemical reaction pathways:
- Synchronized electrical and optical sub-ns diagnostics
- Absorption spectroscopy in UV-Vis-Mid-IR
- Resonator-based laser spectroscopy
- Laser-induced fluorescence (UV-VIS)
- Optical emission spectroscopy (UV-VIS)
Some diagnostic methods are also suitable for mobile use and can be used for external measurements.
