On the nature of thermally stimulated discharge current spectra in polyethylene terephthalate

Yu Gorokhovatsky; D. Temnov; J. N. Marat-Mendes; C. J. M. Dias; Dilip K. Das-Gupta

doi:10.1063/1.367361

On the nature of thermally stimulated discharge current spectra in polyethylene terephthalate

Yu Gorokhovatsky, D. Temnov, J. N. Marat-Mendes, C. J. M. Dias, Dilip K. Das-Gupta

DCM - Departamento de Ciência dos Materiais

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Thermally stimulated depolarization currents (TSDC) in polyethylene terephthalate (Hostaphan) films of different thickness (12, 25, and 50 μm) have been investigated under different environmental conditions in the temperature range of 20-150°C. Two peaks of TSDC spectra observed at approximately 80 and 125°C originate from a dipolar process (α peak) and a space-charge relaxation (ρ peak), as evidenced from the variation of parameters such as electrode geometry and polarizing voltage. A numerical method (Tikhonov regularization procedure) has been employed to determine the most probable values of effective frequency factors of dipolar and space-charge relaxation in polyethylene terephthalate. An apparent influence of environmental pressure on the location of the α peak has been observed whose origin is yet to be determined.

Original language	English
Pages (from-to)	5337-5341
Number of pages	5
Journal	Journal of Applied Physics
Volume	83
Issue number	10
DOIs	https://doi.org/10.1063/1.367361
Publication status	Published - 15 May 1998

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abstract = "Thermally stimulated depolarization currents (TSDC) in polyethylene terephthalate (Hostaphan) films of different thickness (12, 25, and 50 μm) have been investigated under different environmental conditions in the temperature range of 20-150°C. Two peaks of TSDC spectra observed at approximately 80 and 125°C originate from a dipolar process (α peak) and a space-charge relaxation (ρ peak), as evidenced from the variation of parameters such as electrode geometry and polarizing voltage. A numerical method (Tikhonov regularization procedure) has been employed to determine the most probable values of effective frequency factors of dipolar and space-charge relaxation in polyethylene terephthalate. An apparent influence of environmental pressure on the location of the α peak has been observed whose origin is yet to be determined.",

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AU - Temnov, D.

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AU - Dias, C. J. M.

AU - Das-Gupta, Dilip K.

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AB - Thermally stimulated depolarization currents (TSDC) in polyethylene terephthalate (Hostaphan) films of different thickness (12, 25, and 50 μm) have been investigated under different environmental conditions in the temperature range of 20-150°C. Two peaks of TSDC spectra observed at approximately 80 and 125°C originate from a dipolar process (α peak) and a space-charge relaxation (ρ peak), as evidenced from the variation of parameters such as electrode geometry and polarizing voltage. A numerical method (Tikhonov regularization procedure) has been employed to determine the most probable values of effective frequency factors of dipolar and space-charge relaxation in polyethylene terephthalate. An apparent influence of environmental pressure on the location of the α peak has been observed whose origin is yet to be determined.

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On the nature of thermally stimulated discharge current spectra in polyethylene terephthalate

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