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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2022.1
- 수록면
- 255 - 261 (7page)
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초록· 키워드
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A reliable and well-characterized dosimetry system which is traceable to the international measurementsystem, is the key element to quality assurance in radiation processing with cobalt-60 gamma rays, Xrays,and electron beam. This is specifically the case for health-regulated processes, such as the radiationsterilization of single use medical devices and food irradiation for preservation and disinfestation.
Polyethylene is considered to possess a lot of interesting dosimetric characteristics. In this work, adetailed study has been performed to determine the dosimetric characteristics of a commercialized highdensitypolyethylene (HDPE) film using Fourier transformed infrared spectrometry (FTIR). Correlationshave been established between the absorbed dose and radiation induced infrared absorption in polyethylenehaving a maximum at 965 cm 1 (transvinylene band) and 1716 cm 1 (ketone-carbonyl band).
We have found that polyethylene dose-response is linear with dose for both bands up to1000 kGy. Fortransvinylene band, the dose-response is more sensitive if irradiations are made in helium. While, forketone-carbonyl band, the dose-response is more sensitive when irradiations are carried out in air. Thedose-rate effect has been found to be negligible when polyethylene samples are irradiated with electronbeam high dose rates. The irradiated polyethylene is relatively stable for several weeks after irradiation.
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