New polymer gel dosimeters consisting of less toxic monomers with radiation-crosslinked gel matrix

7th International Conference on 3D Radiation Dosimetry

Hiroki, A.^1 ; Yamashita, S.^1 ; Sato, Y.^2 ; Nagasawa, N.^1 ; Taguchi, M.^1

Environmental and Industrial Material Research Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency, Takasaki, Gunma, 370-1292, Japan^1

Chiyoda Technol Corporation, Higashi-ibaraki-gun, Ibaraki, 311-1313, Japan^2

关键词: Absorbance measurements;    Composition ratio;    Dimethacrylates;    Dose response;    Hydroxypropyl cellulose;    Polyethylene glycol 400;    Polymer gel dosimeter;    Radiation-induced crosslinking;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/444/1/012028/pdf
DOI  :  10.1088/1742-6596/444/1/012028

来源: IOP

【 摘 要 】

New polymer gel dosimeters consisting of less toxic methacrylate-type monomers such as 2-hydroxymethyl methacrylate (HEMA) and polyethylene glycol 400 dimethacrylate (9G) with hydroxypropyl cellulose (HPC) gel were prepared. The HPC gels were obtained by using a radiation-induced crosslinking technique to be applied in a matrix instead of a gelatin, which is conventionally used in earlier dosimeters, for the polymer gel dosimeters. The prepared polymer gel dosimeters showed cloudiness by exposing to60Co γ-ray, in which the cloudiness increased with the dose up to 10 Gy. At the same dose, the increase in the cloudiness appeared with increasing concentration of 9G. As a result of the absorbance measurement, it was found that the dose response depended on the composition ratio between HEMA and 9G.