Controlling sensitivity and stability of ferrous-xylenol orange-gelatin 3D gel dosimeters by doping with phenanthroline-type ligands and glyoxal.

@article{Penev2013ControllingSA,
  title={Controlling sensitivity and stability of ferrous-xylenol orange-gelatin 3D gel dosimeters by doping with phenanthroline-type ligands and glyoxal.},
  author={Kalin Penev and Kibret Mequanint},
  journal={Physics in medicine and biology},
  year={2013},
  volume={58 6},
  pages={
          1823-38
        }
}
The ferrous-xylenol orange-gelatin (FXG) dosimeter is widely used for three-dimensional ionizing radiation field mapping through optical scanning. Upon irradiation, the ferrous iron (Fe(2+)) is oxidized to ferric iron (Fe(3+)), which forms an intensely coloured complex with xylenol orange (XO). XO also acts as a diffusion-limiting additive; however, its presence may cause rapid auto-oxidation of Fe(2+) during storage and low stability of the dose response. In this work, phenanthroline-type… CONTINUE READING
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