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An improved pulsed electroacoustic system for space charge measurements under high temperatures and arbitrary waveform voltages

An improved pulsed electroacoustic system for space charge measurements under high temperatures and arbitrary waveform voltages
An improved pulsed electroacoustic system for space charge measurements under high temperatures and arbitrary waveform voltages
This paper presents the design and calibration method of an improved pulsed electroacoustic (PEA) system for space charge measurements, including a novel nanosecond pulse generator and an improved electrode system, which can be used under various temperatures and arbitrary waveform voltages. The measurement principle of the PEA system is first analyzed, and the calibration method for the applied voltage is proposed to solve the problem of waveform distortion caused by voltages with different frequency components. For the pulse generator, the main parameters of output pulses are an amplitude of ∼700 V, a full width of 4.6 ns, a jitter of 0.24 ns, and a repetition rate of 10 kHz on the 50 Ω load. For the electrode system, the flexible upper electrode design is first introduced to achieve consistently close contact between the sample and the electrode. Besides, the hybrid heating method and the replaceable coupling capacitor and high voltage electrode head are adopted. Space charge measurements are conducted at different conditions using this PEA system, which includes different temperatures and different voltage waveforms. The experimental results verify the effectiveness of the calibration method and the feasibility of the improved PEA system.
0034-6748
9
Chen, Guanghui
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Zhang, Siyu
67f903b2-651d-4ad8-ad57-9261ec857064
Xu, Zhiqiang
797f8b0e-a035-4cf9-ac3f-99098a3fdb50
Yan, Jiaqi
1b1740b8-3713-4185-8195-b9646c033655
Peng, Zongren
8fb15e49-3c15-403f-91c5-eda18ea36058
Liu, Peng
d8de1930-c660-4f85-98b2-d825f8a49de9
Chen, Guanghui
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Zhang, Siyu
67f903b2-651d-4ad8-ad57-9261ec857064
Xu, Zhiqiang
797f8b0e-a035-4cf9-ac3f-99098a3fdb50
Yan, Jiaqi
1b1740b8-3713-4185-8195-b9646c033655
Peng, Zongren
8fb15e49-3c15-403f-91c5-eda18ea36058
Liu, Peng
d8de1930-c660-4f85-98b2-d825f8a49de9

Chen, Guanghui, Zhang, Siyu, Xu, Zhiqiang, Yan, Jiaqi, Peng, Zongren and Liu, Peng (2019) An improved pulsed electroacoustic system for space charge measurements under high temperatures and arbitrary waveform voltages. Review of Scientific Instruments, 90, 9, [105112]. (doi:10.1063/1.5113693).

Record type: Article

Abstract

This paper presents the design and calibration method of an improved pulsed electroacoustic (PEA) system for space charge measurements, including a novel nanosecond pulse generator and an improved electrode system, which can be used under various temperatures and arbitrary waveform voltages. The measurement principle of the PEA system is first analyzed, and the calibration method for the applied voltage is proposed to solve the problem of waveform distortion caused by voltages with different frequency components. For the pulse generator, the main parameters of output pulses are an amplitude of ∼700 V, a full width of 4.6 ns, a jitter of 0.24 ns, and a repetition rate of 10 kHz on the 50 Ω load. For the electrode system, the flexible upper electrode design is first introduced to achieve consistently close contact between the sample and the electrode. Besides, the hybrid heating method and the replaceable coupling capacitor and high voltage electrode head are adopted. Space charge measurements are conducted at different conditions using this PEA system, which includes different temperatures and different voltage waveforms. The experimental results verify the effectiveness of the calibration method and the feasibility of the improved PEA system.

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Accepted/In Press date: 4 October 2019
e-pub ahead of print date: 28 October 2019
Published date: 2019
Additional Information: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.

Identifiers

Local EPrints ID: 435448
URI: http://eprints.soton.ac.uk/id/eprint/435448
ISSN: 0034-6748
PURE UUID: ba50999d-0655-4869-b54e-c90d8c7ecf77
ORCID for Zhiqiang Xu: ORCID iD orcid.org/0000-0002-6640-7335

Catalogue record

Date deposited: 06 Nov 2019 17:30
Last modified: 21 Nov 2019 01:33

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Contributors

Author: Guanghui Chen
Author: Siyu Zhang
Author: Zhiqiang Xu ORCID iD
Author: Jiaqi Yan
Author: Zongren Peng
Author: Peng Liu

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