This paper presents the results of research on the Fricke-XO-Pluronic F-127 dosimeter. It consists of a Fricke dosimetric solution and xylenol orange (XO), which are embedded in a matrix of poly(ethylene oxide)--poly(propylene oxide)--poly(ethylene oxide) (Pluronic F-127). Upon irradiation, Fe ions transform into Fe, forming a colored complex with XO ([XO-Fe]). The color intensity is related to the dose absorbed. The optimal composition, storage conditions, and radiation-induced performance of the Fricke-XO-Pluronic F-127 dosimeter were investigated. The optimal composition was found to be 1 mM FAS, 50 mM sulfuric acid (HSO), 0.165 mM XO in 25% Pluronic F-127. The basic features of this dosimeter are discussed, such as dose sensitivity, linear and dynamic dose range, stability before and after irradiation, storage conditions, dose response for irradiation with 6 and 15 MV photons, and batch-to-batch reproducibility. The obtained results showed a certain potential of the Fricke-XO-Pluronic F-127 for radiotherapy dosimetry.
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| http://dx.doi.org/10.3390/ma15030984 | DOI Listing |
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