Abstract
A new gel dosimeter based on a radiation-sensitive silver nitrate was formulated and investigated for its potential use in γ-radiation treatment, from 3 to 100Gy. This gel matrix is analyzed by UV–vis spectrophotometry and X-ray diffraction (XRD). Subjecting the gel to γ-rays produces Ag nanoparticles that exhibit a plasmon resonance absorption band at 450nm. The intensity of this band increases linearly with the increase of absorbed dose up to 100Gy. Stability of Ag nanoparticle in the dark at 6°C is good. The overall uncertainty (2σ) of the gel dosimeter is estimated as ~4.65% in the dose range of 5–100Gy.
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