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Titolo: Transport of ground-state hydrogen atoms in a plasma expansion - art. no. 016411
Autore: Mazouffre, S; Boogaarts, MGH; Bakker, ISJ; Vankan, P; Engeln, R; Schram, DC;
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- Titolo Testata:
- PHYSICAL REVIEW E
fascicolo: 1,
volume: 6401,
anno: 2001,
parte:, 2
pagine: 6411 -
- SICI:
- 1063-651X(200107)6401:1<6411:TOGHAI>2.0.ZU;2-T
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- LASER-INDUCED FLUORESCENCE; A-SI-H; 2-PHOTON EXCITATION; THERMAL-PLASMA; JET; MOLECULES; IONS; DISCHARGES; SCATTERING; COLLISIONS;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- --discip_EC--
- Citazioni:
- 41
- Recensione:
- Indirizzi per estratti:
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- Citazione:
- S. Mazouffre et al., "Transport of ground-state hydrogen atoms in a plasma expansion - art. no. 016411", PHYS REV E, 6401(1), 2001, pp. 6411
Abstract
The transport of ground-state atomic hydrogen in the expansion of a thermal plasma generated from an Ar-H-2 mixture is studied by means of laser-based diagnostic techniques. The flow of hydrogen atoms is investigated by two-photon excitation laser-induced fluorescence (LIF), whereas Ar atoms are probed by LIF as well as by UV Rayleigh scattering. The transport of Ar atomscan be fully understood in terms of a free jet flow; H atoms on the contrary exhibit an anomalous behavior. In the course of the plasma expansion, hydrogen atoms decouple from the argon fluid by a diffusion process as a direct consequence of recombination of H atoms at the vessel walls. In this contribution it is shown, on the basis of experimental results, how plasma-surface interactions can strongly influence the flow pattern of an atomic radical fluid.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/05/13 alle ore 00:22:57