Back to Search
Start Over
One-dimensional modelling of DBDs in Ne–Xe mixtures for excimer lamps
- Source :
- Journal of Physics D: Applied Physics, Journal of Physics D: Applied Physics, IOP Publishing, 2010, 43 (44), pp.445202. ⟨10.1088/0022-3727/43/44/445202⟩
- Publication Year :
- 2010
- Publisher :
- IOP Publishing, 2010.
-
Abstract
- Dielectric barrier discharges (DBDs) are a promising technology for high-intensity sources of specific ultraviolet (UV) and vacuum ultraviolet (VUV) radiation. In this work, the microdischarge dynamics in DBDs for Ne–Xe mixtures under the close conditions of excimer lamp working has been investigated. The computer model including the cathode fall, the positive column and the dielectric is composed of two coupled sub-models. The first submodel describes the electrical properties of the discharge and is based on a fluid, two-moments description of electron and ion transport coupled with Poisson's equation during the discharge pulse. The second submodel, based on three main modules: a plasma chemistry module, a circuit module and a Boltzmann equation module, with source terms deduced from the electric model, describes the time variations of charged and excited species concentrations and the UV photon emission. The use of the present description allows a good resolution near the sheath at high pressure and it predicts correctly the waveform of the discharge behaviour. The effects of operation voltage, dielectric capacitance, gas mixture composition, gas pressure, as well as the secondary electron emission by ion at the cathode on the discharge characteristics and the 173 nm photon generation have been investigated and discussed.
- Subjects :
- Acoustics and Ultrasonics
DBDs
Analytical chemistry
02 engineering and technology
Dielectric barrier discharge
Electron
Dielectric
medicine.disease_cause
01 natural sciences
010305 fluids & plasmas
Ion
law.invention
Physics::Plasma Physics
law
0103 physical sciences
medicine
52.20.-j
Chemistry
82.33.Xj
52.80.-s
Sheath
021001 nanoscience & nanotechnology
Condensed Matter Physics
Excimer lamp
Cathode
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Secondary emission
Modeling. PACS: 51.50.+v
Ne−Xe mixtures
Atomic physics
0210 nano-technology
Ultraviolet
Subjects
Details
- ISSN :
- 13616463 and 00223727
- Volume :
- 43
- Database :
- OpenAIRE
- Journal :
- Journal of Physics D: Applied Physics
- Accession number :
- edsair.doi.dedup.....fa3ba43cee423ea8664b32f64e2397a3
- Full Text :
- https://doi.org/10.1088/0022-3727/43/44/445202