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The Influence of Gamma Irradiation on Space Charge in LDPE

Chen, G. and Fu, M. (2006) The Influence of Gamma Irradiation on Space Charge in LDPE At 8th International Conference on Properties and Applications of Dielectric Materilas, Indonesia. 26 - 30 Jun 2006. , pp. 131-134.

Record type: Conference or Workshop Item (Paper)

Abstract

In the present paper, we report an investigation on the effect of radiation environment on space charge in low density polyethylene (LDPE). LDPE thin films of ~100 µm were irradiated at a dose rate of approximately 1 kGy/h using a 60Co gamma source. The samples were irradiated in air, vacuum and nitrogen gas at room temperature to various doses from 5 to 100 kGy. Space charge measurements were carried out using the pulsed electroacoustic (PEA) technique. The applied electric field in all cases is 50 kV/mm. It has been found that the space charge dynamics in the irradiated samples are different from the fresh (un-irradiated) sample and affected by irradiation environment. Although the oxidation of the samples in air may play an important role in the observed differences, charge dynamics in the samples irradiated in vacuum and pure nitrogen gas are also different.

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More information

Published date: 2006
Venue - Dates: 8th International Conference on Properties and Applications of Dielectric Materilas, Indonesia, 2006-06-26 - 2006-06-30
Keywords: Gamma irradiation, LDPE, Space charge, PEA
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 262940
URI: http://eprints.soton.ac.uk/id/eprint/262940
ISBN: 1-4244-0190-9
PURE UUID: 532bbfca-94e3-45f3-a216-3bfb5441c4a3

Catalogue record

Date deposited: 04 Sep 2006
Last modified: 18 Jul 2017 08:46

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Contributors

Author: G. Chen
Author: M. Fu

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