Gamma radiation effects in polyethylene naphthalate - electrical properties

J.W. Mackersie; M.J. Given; S.J. MacGregor; R.A. Fouracre

doi:10.1109/CEIDP.2001.963516

Gamma radiation effects in polyethylene naphthalate - electrical properties

J.W. Mackersie, M.J. Given, S.J. MacGregor, R.A. Fouracre

Electronic And Electrical Engineering

Research output: Contribution to conference › Paper

8 Citations (Scopus)

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.

Original language	English
Pages	183-187
Number of pages	4
DOIs	https://doi.org/10.1109/CEIDP.2001.963516
Publication status	Published - Oct 2001
Event	Annual Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) - Waterloo, Canada Duration: 14 Oct 2001 → 17 Oct 2001

Conference

Conference	Annual Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
Country/Territory	Canada
City	Waterloo
Period	14/10/01 → 17/10/01

Keywords

gamma radiation
polyethylene
naphthalate
electrical properties

Access to Document

10.1109/CEIDP.2001.963516

Cite this

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title = "Gamma radiation effects in polyethylene naphthalate - electrical properties",

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. ",

keywords = "gamma radiation, polyethylene, naphthalate, electrical properties",

author = "J.W. Mackersie and M.J. Given and S.J. MacGregor and R.A. Fouracre",

year = "2001",

month = oct,

doi = "10.1109/CEIDP.2001.963516",

language = "English",

pages = "183--187",

note = "Annual Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) ; Conference date: 14-10-2001 Through 17-10-2001",

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TY - CONF

T1 - Gamma radiation effects in polyethylene naphthalate - electrical properties

AU - Mackersie, J.W.

AU - Given, M.J.

AU - MacGregor, S.J.

AU - Fouracre, R.A.

PY - 2001/10

Y1 - 2001/10

N2 - 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.

AB - 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.

KW - gamma radiation

KW - polyethylene

KW - naphthalate

KW - electrical properties

UR - http://dx.doi.org/10.1109/CEIDP.2001.963516

U2 - 10.1109/CEIDP.2001.963516

DO - 10.1109/CEIDP.2001.963516

M3 - Paper

SP - 183

EP - 187

T2 - Annual Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

Y2 - 14 October 2001 through 17 October 2001

ER -

Gamma radiation effects in polyethylene naphthalate - electrical properties

Abstract

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Keywords

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