Radiation-induced conduction under high electric field (1×106 to 1×108 V/m) in polyethylene-terephthalate
- 1 March 1978
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 32 (5) , 278-280
- https://doi.org/10.1063/1.90019
Abstract
Radiation‐induced conduction in polyethylene‐terephthalate (PET) has been measured under high electric field (1.0×106 to 1.6×108 V/m). In a 6‐μm‐thick PET film, saturation of the radiation‐induced current occurs at field strengths above 1.2×108 V/m. This has been demonstrated by the thickness and dose rate dependence of the induced current. Radiation‐induced conductivity increases monotonically with field strength, then shows a saturation tendency. This may be explained by geminate recombination. Above 1×108 V/m, slowly increasing radiation‐induced current appears. This may be caused by electron injection from the cathode, enhanced by the accumulation of the hetero space charges near it.Keywords
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