Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10136957 | Applied Radiation and Isotopes | 2018 | 32 Pages |
Abstract
A radiation-sensitive polymer poly(hexa-2,4-diynylene adipate) (PHDA) was synthesized and incorporated into polyvinyl butyral films for radiation dose measurements in the 0.5 - 60â¯kGy range. PHDA undergoes crosslinking polymerization upon exposure to γ-rays, which changes its color from very pale yellow to deep orange-yellow. The color change is directly related to the absorbed dose. The absorption spectrum of the irradiated films features one absorption band around 500â¯nm with a shoulder around 465â¯nm. With increasing absorbed dose, the two bands grow in intensity and move towards higher wavelengths. The dosimeter is nearly insensitive to variations of the humidity in the range of 0-54% and temperature in the range of 30-45â¯Â°C during irradiation. The color intensifies after irradiation, both in the dark and in the light at room temperature, which reflects the continuing crosslinking polymerization. However, at ââ¯4â¯Â°C, the color intensity does not change with time.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Yasser S. Soliman, Atef A. Abdel-Fattah, Turki S. Alkhuraiji,