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Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes (Articolo in rivista)

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Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes (Articolo in rivista) (literal)

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P F Ambrico (1), MAmbrico (1), A Colaianni (2,4), L Schiavulli (3,4), G Dilecce (1) and S De Benedictis (1) (2010)
Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes
in Journal of physics. D, Applied physics (Online); IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
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P F Ambrico (1), MAmbrico (1), A Colaianni (2,4), L Schiavulli (3,4), G Dilecce (1) and S De Benedictis (1) (literal)

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Articles selected by editors as J. PHYS D Highlights 2010 http://iopscience.iop.org/0022-3727/page/2010%20Highlights (literal)

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1 Consiglio Nazionale delle Ricerche, Istituto di Metodologie Inorganiche e dei Plasmi UOS Bari-c/o Dipartimento di Chimica, Universit`a degli Studi di Bari 'Aldo Moro', via Orabona, 4, 70126 Bari, Italy 2 Dipartimento di Geologia e Geofisica, Universit`a degli Studi di Bari 'Aldo Moro', via Orabona, 4, 70126 Bari, Italy 3 Dipartimento Interateneo di Fisica, Universit`a degli Studi di Bari 'Aldo Moro', via Orabona, 4, 70126 Bari, Italy 4 INFN sezione di Bari, via Orabona, 4, 70126 Bari, Italy (literal)

Titolo

Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes (literal)

Abstract

In this study, the charge trapping effect in alumina dielectric surfaces has been deeply investigated by means of a dedicated dielectric barrier discharge apparatus in different discharge regimes and gas mixtures. This work further validates our previous findings in the case of air discharges in a filamentary regime. Long lasting charge trapping has been evidenced by ex situ thermoluminescence characterizations of alumina dielectric barrier plates exposed to a plasma. The density of trapped surface charges was found to be higher in the glow discharge with respect to pseudo-glow and filamentary regimes, and for all regimes the minimum trap activation temperature was 390K and the trap energy was less than or around 1 eV. This implies that in the case of glow discharges a higher reservoir of electrons is present. Also, the effect was found to persist for several days after running the discharge. (literal)

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