Influence of thin porous Al{sub 2}O{sub 3} layer on aluminum cathode to the H{sub a}lpha line shape in glow discharge

Journal Article · Mon Jun 01 00:00:00 EDT 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3143016· OSTI ID:21356170

Steflekova, V; Sisovic, N M; Konjevic, N ^[1]

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1. Faculty of Physics, University of Belgrade, P.O. Box 368, Belgrade (Serbia)

The results of the Balmer alfa line shape study in a plane cathode-hollow anode Grimm discharge with aluminum (Al) cathode covered with thin layer of porous Al{sub 2}O{sub 3} are presented. The comparison with same line profile recorded with pure Al cathode shows lack of excessive Doppler broadened line wings, which are always detected in glow discharge with metal cathode. The effect is explained by the lack of strong electric field in the cathode sheath region, which is missing in the presence of thin oxide layer in, so called, spray discharge.

• OSTI ID: 21356170
• Journal Information: Journal of Applied Physics, Vol. 105, Issue 11; Other Information: DOI: 10.1063/1.3143016; (c) 2009 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
ALUMINIUM OXIDES
CATHODES
DOPPLER BROADENING
ELECTRIC FIELDS
GLOW DISCHARGES
HOLLOW ANODES
LAYERS
PLASMA SHEATH
POROUS MATERIALS
THIN FILMS
ALUMINIUM COMPOUNDS
ANODES
CHALCOGENIDES
ELECTRIC DISCHARGES
ELECTRODES
ELEMENTS
FILMS
LINE BROADENING
MATERIALS
METALS
OXIDES
OXYGEN COMPOUNDS