Comparison of the influence of inorganic salts on the NMR dose sensitivity of polyacrylamide-based gel dosimeter

7th International Conference on 3D Radiation Dosimetry

Hayashi, S.-I.^1 ; Kawamura, H.^2 ; Usui, S.^1 ; Tominaga, T.^1

Department of Clinical Radiology, Faculty of Health Sciences, Hiroshima International University, Higashi-Hiroshima, Hiroshima, 739-2695, Japan^1

Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, Ibaraki, 300-0394, Japan^2

关键词: Additive effects;    Dose sensitivity;    Gel dosimeter;    Inorganic salts;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/444/1/012094/pdf
DOI  :  10.1088/1742-6596/444/1/012094

来源: IOP

【 摘 要 】

On the NMR dose sensitivities of polyacrylamide-based gel dosimeters irradiated by X-ray, the additive effect of various inorganic salts (electrolytes) is investigated. Among the various combination of cations (Li+, Na+, K+, Mg2+, Ca2+, Sr2+, Ba2+, Zn2+and Al3+) and anions (Cl-, NO3-and SO42-), MgCl2is shown to be the most effective sensitizer. In the result, it is suggested that the extent of the increase of the dose sensitivity may correlate to the hydration power of cations rather than anions. Contrary to the dose sensitivity enhancement, the depression of melting point caused by the additives is also pointed out.