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The role of oxidation in the formation of space charge in gamma-irradiated low-density polyethylene

The role of oxidation in the formation of space charge in gamma-irradiated low-density polyethylene
The role of oxidation in the formation of space charge in gamma-irradiated low-density polyethylene
The research presented in this paper investigates the role of oxidation in the formation of space charge in gamma-irradiated low-density polyethylene after being electrically stressed under dc voltage. Polyethylene plaques both with and without antioxidant were irradiated up to 500kGy using a 60Co gamma source and space charge distributions were measured using the piezoelectric induced pressure wave propagation method. It has been found that a large amount of positive charge evolved adjacent to the cathode in the sample without antioxidant and was clearly associated with oxidation of the near surface. The amount of charge formed for a given applied stress, increased with the dose absorbed by the material. On the other hand space charge in a sample containing antioxidant under the same applied electric stress was negligible even in the sample exposed to 500kGy.
4.75-78
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Davies, A.E.
56d95222-b259-494a-92e9-68b090ec0dcd
Banford, H.M.
1d02669b-d91a-49f9-a9ff-051bdcbdd172
Adachi, N.
74b3fdb7-d84b-426e-b609-915e6877e176
Tanaka, Y.
fda60949-5883-48cd-b316-2505ffd3bcbe
Takada, T.
ca188853-8fbf-4aa4-a7bf-36d72fe2c462
Chen, G.
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Davies, A.E.
56d95222-b259-494a-92e9-68b090ec0dcd
Banford, H.M.
1d02669b-d91a-49f9-a9ff-051bdcbdd172
Adachi, N.
74b3fdb7-d84b-426e-b609-915e6877e176
Tanaka, Y.
fda60949-5883-48cd-b316-2505ffd3bcbe
Takada, T.
ca188853-8fbf-4aa4-a7bf-36d72fe2c462

Chen, G., Davies, A.E., Banford, H.M., Adachi, N., Tanaka, Y. and Takada, T. (1999) The role of oxidation in the formation of space charge in gamma-irradiated low-density polyethylene. 11th International Symposium on High Voltage Engineering. 4.75-78 .

Record type: Conference or Workshop Item (Other)

Abstract

The research presented in this paper investigates the role of oxidation in the formation of space charge in gamma-irradiated low-density polyethylene after being electrically stressed under dc voltage. Polyethylene plaques both with and without antioxidant were irradiated up to 500kGy using a 60Co gamma source and space charge distributions were measured using the piezoelectric induced pressure wave propagation method. It has been found that a large amount of positive charge evolved adjacent to the cathode in the sample without antioxidant and was clearly associated with oxidation of the near surface. The amount of charge formed for a given applied stress, increased with the dose absorbed by the material. On the other hand space charge in a sample containing antioxidant under the same applied electric stress was negligible even in the sample exposed to 500kGy.

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More information

Published date: 1999
Venue - Dates: 11th International Symposium on High Voltage Engineering, 1999-01-01
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 253504
URI: http://eprints.soton.ac.uk/id/eprint/253504
PURE UUID: 158edda2-001b-4e9b-bc88-359c48e10bb5

Catalogue record

Date deposited: 12 Oct 2000
Last modified: 16 Jul 2019 23:05

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