Surface potential decay of gamma-irradiated low-density polyethylene

Author

Chen, George

Author_Institution

Sch. of Electron. & Comput. Sci., Univ. of Southampton, Southampton, UK

fYear

2009

fDate

18-21 Oct. 2009

Firstpage

165

Lastpage

168

Abstract

In the present paper the surface potential decay after dc corona charging of gamma-irradiated low-density polyethylene (LDPE) has been studied. The irradiation was carried out in air, nitrogen gas and vacuum to investigate the effect of irradiation environment on the surface potential of LDPE. Samples with different absorbed doses were obtained by exposing samples to ⁶⁰Co for various times at room temperature. It has been found that there is a significant change in the surface potential decay characteristics after different irradiation dose and the surface potential decay pattern depends also on irradiation environment. The possible surface potential decay mechanisms responsible for the above were discussed. The results are useful in the context of long term performance of electrets.

Keywords

corona; gamma-ray effects; polymers; surface charging; surface potential; dc corona charging; electrets; gamma-irradiated low-density polyethylene; irradiation environment; nitrogen gas; surface potential decay; temperature 293 K to 298 K; Corona; Dielectrics and electrical insulation; Earth; Monitoring; Needles; Nitrogen; Polyethylene; Surface charging; Surface morphology; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2009. CEIDP '09. IEEE Conference on

Conference_Location

Virginia Beach, VA

ISSN

0084-9162

Print_ISBN

978-1-4244-4557-8

Electronic_ISBN

0084-9162

Type

conf

DOI

10.1109/CEIDP.2009.5377762

Filename

5377762