http://www.cnr.it/ontology/cnr/individuo/prodotto/ID34024
Nitrogen vibrational excitation in a N-2/He pulsed planar-ICP RF discharge (Articolo in rivista)
- Type
- Label
- Nitrogen vibrational excitation in a N-2/He pulsed planar-ICP RF discharge (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1088/0963-0252/14/4/006 (literal)
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- P. F. Ambrico; R. Bektursunova; G. Dilecce; S. De Benedictis (literal)
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- P.F. Ambrico; R. Bektursunova (1); G. Dilecce; S. De Benedictis
Istituto di Metodologie Inorganiche e dei Plasmi, CNR c/o Department of Chemistry,
University of Bari, Via Orabona 4, 70126 Bari, Italy
1) Permanent address: Chemistry Faculty, Computational Chemistry
Laboratory, Kazak State University, Almaty, Kazakhstan (literal)
- Titolo
- Nitrogen vibrational excitation in a N-2/He pulsed planar-ICP RF discharge (literal)
- Abstract
- A pure inductive regime of pulsed RF discharge in N-2-He mixtures at 0.2 Torr has been investigated by time resolved Langmuir probe and optical emission spectroscopy. A planar coil ICP with a Faraday shield has been used. Mixture compositions of 5-100% N-2 and duty cycles, T-ON = 1-15 ms and T-OFF = 15 ins, have been explored. The Langmuir probe analysis evidences a Maxwell electron energy distribution in the discharge and post-discharge, characterized by electron density and temperature that depend on both duty cycle and composition. The vibrational excitation of N-2(C) state is inferred by the N-2 second positive emissions. Its kinetic analysis reveals the formation of a high vibrational excitation of ground state nitrogen. A vibrational temperature higher than 10 000 K can be reached at the end of the 5 ms discharge pulse on the levels v = 0-3 of the X state. Such a high vibrational temperature slows the post-discharge relaxation of the electron temperature. (literal)
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