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. In, 8th Internaional Conference on Properties and Applications of Dielectric Materilas, Bali, Indonesia, 26 - 30 Jun 2006. IEEE, 131-134.

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Description/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.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: 26 - 30 June 2006
ISBNs: 1424401909
Keywords: Gamma irradiation, LDPE, Space charge, PEA
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science
Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 262940
Date Deposited: 04 Sep 2006
Last Modified: 27 Mar 2014 20:06
Publisher: IEEE
Further Information:Google Scholar
ISI Citation Count:0
URI: http://eprints.soton.ac.uk/id/eprint/262940

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