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

被引：33
作者：
Ambrico, P. F. [1 ]
Ambrico, M. [1 ]
Colaianni, A. [2 ,4 ]
Schiavulli, L. [3 ,4 ]
Dilecce, G. [1 ]
De Benedictis, S. [1 ]
机构：
[1] Univ Bari Aldo Moro, Dipartmento Chim, Ist Metodol Inorgan & Plasmi UOS Bari, CNR, I-70126 Bari, Italy
[2] Univ Bari Aldo Moro, Dipartimento Geol & Geofis, I-70126 Bari, Italy
[3] Univ Bari Aldo Moro, Dipartimento Interateneo Fis, CNR, I-70126 Bari, Italy
[4] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 32期
关键词：
ATMOSPHERIC-PRESSURE; GLOW;
D O I：
10.1088/0022-3727/43/32/325201
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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 390 K 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.
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页数：10
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