Picture of a black hole

Strathclyde Open Access research that creates ripples...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of research papers by University of Strathclyde researchers, including by Strathclyde physicists involved in observing gravitational waves and black hole mergers as part of the Laser Interferometer Gravitational-Wave Observatory (LIGO) - but also other internationally significant research from the Department of Physics. Discover why Strathclyde's physics research is making ripples...

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Gamma radiation effects in polyethylene naphthalate - electrical properties

Mackersie, J.W. and Given, M.J. and MacGregor, S.J. and Fouracre, R.A. (2001) Gamma radiation effects in polyethylene naphthalate - electrical properties. In: Annual Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), 2001-10-14 - 2001-10-17.

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Samples of polyethylene naphthalate (PEN) film, 25 mum thick, have been exposed to gamma radiation doses of 26.4kGy and 158.4kGy. The electrical properties of virgin material and material exposed to these representative doses have been examined by two methods. The first is the response of the material to the application and removal of a step voltage and the second is thermally stimulated depolarisation current (TSDC) measurements. The former provided data on both the nominal DC conductivity as a function of temperature and, by transforming the transient current results to the frequency domain, the low frequency dielectric loss behaviour - also as a function of temperature. The TSDC measurements included both global spectra and partial polarisation spectra. Both types of measurement showed significant differences in behaviour associated with ageing of the sample material. It is also shown that effects due to processes activated at higher temperatures can be initiated by polarisation at much lower temperatures.