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Title

THE USE OF POLYVINYL CHLORIDE FILMS DYED WITH METHYL RED IN RADIATION DOSIMETRY

Writers

KATTAN MANZUR | DAHER Y.

Pages

 Start Page 263 | End Page 267

Abstract

 Background: The purpose of this work was to investigate the use of POLYVINYL CHLORIDE (PVC) dyed with METHYL RED as a high dose radiation DOSIMETRY. Materials and Methods: Commercial PVC films from Sabic made from resins PVC57S with thickness of 60 mm and METHYL RED with a molecular weight of 269.31 were used. Irradiation was carried out using a60Co g-ray generator with sources arranged in rectangular holder with a total activity of 73.6926 kCi. Absorbance measurements were made by Jasco V- 630 UV-VIS spectrophotometer. Dose rate and irradiation temperature effects as well as post-irradiation storage in dark and indirect daylight conditions on DOSIMETRY performance were also investigated.Results: The results showed a linear relationship between the relative absorbance (response) and the absorbed dose at the wavelength 548 nm in the range of 0-150 kGy. The response was found to be independent of both dose rate and irradiation temperature.Conclusion: The experimental results indicate that PVC films dyed with METHYL RED may be used for a high dose radiation DOSIMETRY.

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