The group "Experimental Physics II - Reactive Plasmas" at the faculty of physics and astronomy at Ruhr University Bochum.
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Space resolved gas temperature of a microwave plasma torch used for hydrogen production via methane pyrolysis
Pyrolysis of methane is a promising, new, greenhouse gas-free production method of hydrogen. Here, we present optical emission spectra of a microwave plasma torch operated in an argon methane mixture. Detailed spatial resolution is achieved by...
Ignition and propagation of nanosecond pulsed plasmas in distilled water - negative vs. positive polarity applied to a pin electrode
Nanosecond plasmas in liquids are being used for water treatment, electrolysis or biomedical applications. The exact nature of these very dynamic plasmas and most important their ignition physics are strongly debated. The ignition itself may be...
Propagation of nanosecond plasmas in liquids—Streamer velocities and streamer lengths
Nanosecond plasmas in liquids are often generated by applying a short high voltage pulse to an electrode immersed in a liquid for biomedical or environmental applications. The plasmas appear as streamers that propagate through the liquid. The...
Plasma sheath tailoring by a magnetic field for three-dimensional plasma etching
Three-dimensional (3D) etching of materials by plasmas is an ultimate challenge in microstructuring applications. A method is proposed to reach a controllable 3D structure by using masks in front of the surface in a plasma etch reactor in...
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Simulated electric field magnitude of microwave plasma torch
Magnitude of the electric field of the microwave plasma torch simulated with ansys HFSS
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Intra-cavity dynamics in a microplasma channel by side-on imaging
Here, a microplasma channel was investigated. The setup consists of three stacked layers: a magnet, a dielectric foil and two nickel foils that are separated by a 120 μm wide gap. The magnet is grounded while the two nickel foils are powered. The...
Secondary electron emission from magnetron targets
Paper Secondary electron emission from magnetron targets, published in IOP PSST 2023. DOI 10.1088/1361-6595/acd57e
Nanosecond plasmas in water: ignition, cavitation and plasma parameters
Nanosecond plasmas in liquids play an important role in the field of decontamination, electrolysis or plasma medicine. The understanding of these very dynamic plasmas requires information about the temporal variation of species densities and...
Nanosecond pulsed discharges in distilled water - Part II: Line emission and plasma propagation
Nanosecond plasmas in liquids can initiate chemical processes that are exploited in the elds of water treatment, electrolysis or biomedical applications. The understanding of these chemical processes relies on unraveling the dynamics of the...
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