Conveners
1.6 Plasma Chemistry
- Jared Miles (Wright Patterson AFB)
Transient plasma ignition (TPI) – where high-energy, short-pulsed, non-equilibrium plasma are used to ignite flammable mixtures – is of interest to engine developers due to the generation of distributed ignition sites that accelerate initial burn rates and reduced electrode erosion that results from the avoidance of breakdown. Transient plasma discharges produce active radicals (O, OH, etc.)...
Non-equilibrium atmospheric pressure plasmas received a lot of attentions in the last decade due to promising applications in the biomedical field and for material processing [1]. Reactive species generated by plasmas, such as hydroxyl are considered to play essentials roles for these applications. Atomic hydrogen, another dominant species, shows great potentials in ion reduction leading to...
U plasma spectroscopic features are very dense with the presence of large number of atomic and ionic transitions. For example, U spectrum contains ~100000 lines in the UV and visible spectral range originating from ~1600 energy levels. The spectral features become more complex in the presence of oxygen containing ambient atmosphere which initiates plasma chemistry through oxidation/combustion...
Plasmas coming into contact with liquid water is the basis of a range of technological applications for environmental remediation and medicine. These technologies are enabled by complex plasma-driven chemical and physical processes at the plasma-liquid interface. At the interface, however, plasmas can also drive Marangoni flow in the bulk liquid. This effect can thus circulate reactive species...
An experimental setup and data analysis method for determination of the laminar burning velocity of flames exposed to pulsed microwaves is presented, and used to investigate lean methane-air flames. The results show an increase in laminar burning velocity with increasing duration of the microwave pulses, at constant electric field strength and for increasing field strength with the same pulse...
This analysis doesn't seek to create the most complex and definitive Ar/Hydrogen chemistry and radiation model, but rather to gain enough insight from existing literature to support an easily manageable chemistry set, within a more complex transport code, assessing the plasma species dynamics and radiation rates required to infer line intensities for experimental actinometry.
No matter what...
