High-resolution Pulsed Electro-acoustic (HR PEA) Measurement of Space Charge in Outer Space Dielectric Materials

被引:9
作者
Galloy, L. [1 ]
Berquez, L. [1 ]
Baudoin, F. [1 ]
Payan, D. [2 ]
机构
[1] Univ Paul Sabatier, Lab Plasma & Convers Energie, 118 Route Narbonne, F-31062 Toulouse 9, France
[2] Ctr Natl Etud Spatiales, 18 Ave Edouard Belin, F-31401 Toulouse 9, France
关键词
Pulsed electro-acoustic method; space charge; piezoelectric conversion; acoustic detector; high-resolution;
D O I
10.1109/TDEI.2016.7736880
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The pulsed electro-acoustic (PEA) method is used for thirty years for measuring space charge distribution in dielectric materials [1]. However, this method was limited to at least 150 ttm thick films characterization. For some applications, in spatial industry for example, 50 mu m thick outer space dielectric materials must be analyzed. A high resolution optimized measurement system is discussed in this paper in order to expand performances and ranges of this method. To design it, a new pulse generator has been conceived and an optimized acoustic detector, key of the PEA method, has been realized and validated. The optimized High -Resolution PEA apparatus allows to obtain calibration signal with 50 um thick dielectric materials that can be used to obtain the characteristic transfer function of the PEA system, essential step to use the data processing to find space charge distribution to characterize thinner dielectric materials.
引用
收藏
页码:3151 / 3155
页数:5
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