Dielectric response of heavy ion irradiated PADC track detector

The frequency response of dielectric constant ( ϵ ′) has been studied both in the pristine and irradiated samples in the frequency range 80 Hz to 100 kHz. The frequency dependence of dielectric response for pristine and irradiated samples reveals the presence of a low frequency dispersion and a loss...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 1999-07, Vol.155 (1), p.116-119
Main Authors: Phukan, T, Kanjilal, D, Goswami, T.D, Das, H.L
Format: Article
Language:English
Subjects:
Dielectric constant
Ion irradiation
Track detector
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Summary:The frequency response of dielectric constant ( ϵ ′) has been studied both in the pristine and irradiated samples in the frequency range 80 Hz to 100 kHz. The frequency dependence of dielectric response for pristine and irradiated samples reveals the presence of a low frequency dispersion and a loss peak that can be related to interfacial polarisation between neighbouring carbon rich clusters. Formation of such clusters due to heavy ion irradiation has been ascertained by FTIR studies. The frequency dependence of ϵ ′ in both pristine and irradiated samples has been found to obey a relation of the type ϵ ′∝ f n−1 , where n is a constant and f is the frequency.
ISSN:0168-583X
1872-9584
DOI:10.1016/S0168-583X(99)00255-4