Ozone, O3, is a strong oxidizing agent often used for water purification. O3is typically produced in dielectric barrier discharges (DBDs) by electron-impact dissociation of O2, followed by three-body association reactions between O and O2. Previous studies on O3formation in low-temperature plasma DBDs have shown that O3concentrations can drop to nearly zero after continued operation, termed the ozone-zero phenomenon (OZP). Including small (<4%) admixtures of N2can suppress this phenomenon and increase the O3production relative to using pure O2in spite of power deposition being diverted from O2to N2and the production of nitrogen oxides, N
The Quantemol database (QDB) provides cross sections and rates of processes important for plasma models; heavy particle collisions (chemical reactions) and electron collision processes are considered. The current version of QDB has data on 28 917 processes between 2485 distinct species plus data for surface processes. These data are available via a web interface or can be delivered directly to plasma models using an application program interface; data are available in formats suitable for direct input into a variety of popular plasma modeling codes including HPEM, COMSOL, ChemKIN, CFD-ACE+, and VisGlow. QDB provides ready assembled plasma chemistries plus the ability to build bespoke chemistries. The database also provides a Boltzmann solver for electron dynamics and a zero-dimensional model. Thesedevelopments, use cases involving O2, Ar/NF3, Ar/NF3/O2, and He/H2O/O2chemistries, and plans for the future are presented.
more » « less- NSF-PAR ID:
- 10385241
- Publisher / Repository:
- IOP Publishing
- Date Published:
- Journal Name:
- Plasma Sources Science and Technology
- Volume:
- 31
- Issue:
- 9
- ISSN:
- 0963-0252
- Page Range / eLocation ID:
- Article No. 095020
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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