Verification of a non-diffusing gel dosimeter

Author(s)
Davies, Justin B
Bosi, Stephen G
Baldock, Clive
Publication Date
2013
Abstract
An evaluation of the diffusion coefficient of a genipin-gelatin gel dosimeter was carried out by fitting an inverse square root function to image profile data. A comparison was made with a Fricke-gelatin-xylenol orange (FGX) gel dosimeter, in which the ions are known to diffuse. The diffusion coefficient for this FGX gel, consisting of 0.5 mM ferrous ammonium sulphate, 50 mM sulphuric acid, 0.15 mM xylenol orange and 3 % by weight gelatin was 0.70 ± 0.05 mm² h-¹ at 5 Gy. The genipin-gelatin gel consisted of 50 μM genipin, 4 % by weight gelatin and 100 mM sulphuric acid. The fitted parameter that is proportional to the diffusion coefficient did not significantly change over time, demonstrating that this genipingelatin gel is a non-diffusing dosimeter.
Citation
Journal of Physics: Conference Series, v.444, p. 1-4
ISSN
1742-6596
1742-6588
Link
Publisher
Institute of Physics Publishing Ltd
Title
Verification of a non-diffusing gel dosimeter
Type of document
Journal Article
Entity Type
Publication

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