NO formation mechanisms studied by infrared laser absorption in a single low-pressure plasma pulse
- 1. Laboratoire de Physique et Technologie des Plasmas, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex (France)
- 2. St Petersburg State University, Faculty of Physics, Ulianovskaya 1, 198904 St. Petersburg (Russian Federation)
- 3. PIIM, Universite de Provence, CNRS, Centre de St Jerome, Case 241, 13397 Marseille Cedex 20 (France)
- 4. INP-Greifswald, F.-L.-Jahn-Str. 19, 17489 Greifswald (Germany)
Description
The formation of NO molecules during a single plasma pulse in a low-pressure dc discharge is measured using time resolved tunable diode laser absorption spectroscopy in the infrared region. The pulse duration ranges from 280 μs to 16 ms and the pulse current ranges from 20 to 80 mA. The gas pressure is 133 Pa. Experimental results show that NO density is about proportional to the product of the pulse current times the pulse duration. NO formation mechanisms are discussed. We show that reaction of oxygen atoms with vibrationally excited nitrogen molecules (N2(X, v > 12) + O) does not impact the NO concentration. Numerical computation of a simplified kinetics taking into account excited metastable state N2(A) for the NO formation shows good agreement
Additional details
Identifiers
- DOI
- 10.1088/0963-0252/16/1/S12;
- PII
- S0963-0252(07)31325-X;
Publishing Information
- Journal Title
- Plasma Sources Science and Technology
- Journal Volume
- 16
- Journal Issue
- 1
- Journal Page Range
- p. S107-S114
- ISSN
- 0963-0252
Conference
- Title
- 18. European sectional conference on atomic and molecular physics of ionized gases
- Dates
- 12-16 Jul 2006
- Place
- Lecce (Italy)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38069387
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S74: ATOMIC AND MOLECULAR PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ABSORPTION; ABSORPTION SPECTROSCOPY; ATOM-MOLECULE COLLISIONS; ATOMS; CALCULATION METHODS; ELECTRIC CURRENTS; ELECTRIC DISCHARGES; KINETICS; LASER RADIATION; METASTABLE STATES; MOLECULES; NITRIC OXIDE; NITROGEN; OXYGEN; PLASMA; PULSES; TIME RESOLUTION
- Descriptors DEC
- ATOM COLLISIONS; CHALCOGENIDES; COLLISIONS; CURRENTS; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY LEVELS; EXCITED STATES; MOLECULE COLLISIONS; NITROGEN COMPOUNDS; NITROGEN OXIDES; NONMETALS; OXIDES; OXYGEN COMPOUNDS; RADIATIONS; RESOLUTION; SORPTION; SPECTROSCOPY; TIMING PROPERTIES