| abstract |
PROBLEM TO BE SOLVED: To measure a three-dimensional dose distribution by a dosimeter such as a gel dosimeter. In a gel dosimeter according to an embodiment of the present invention, a radiation dose containing water as a solvent or dispersion medium, clay fine particles swollen by water, and a recording material precursor dissolved or dispersed in each other. A gel dosimeter for measurement is provided. The recording material precursor reacts with both radicals that are ionized from water when irradiated with radiation and molecular radical derivatives, which are molecules that are formed by bonding radicals together. Contains atoms or ions that will change number. In the gel dosimeter, before the irradiation with radiation, the same kind of substance as the molecular radical derivative does not remain and the fluidity is lost. [Selection] Figure 5 |