Gel dosimeter for measuring radiation dosage and manufacturing method therefor

摘要

To measure three-dimensional dose distributions with a dosimeter, such as a gel dosimeter. In an embodiment of the present invention, provided is a gel dosimeter having water, as solvent or disperse medium, clay particles that swell with water, and recording material precursor, which are dissolved or dispersed with each other. The recording material precursor has an atom or ion, wherein the atom or ion changes its valence number by reacting with both of a radical and a molecular radical derivative. The radical is to be generated from the water ionized by irradiation of radiation rays, and the molecular radical derivative is a molecule to be formed by bonding the radicals with each other. By the time radiation rays are irradiated, the gel dosimeter has been free from a substance identical to the molecular radical derivative and has lost fluidity.

主权项

1. A gel dosimeter for measuring radiation dose comprising:
water, as solvent or disperse medium: clay particles; recording material precursor having an atom or ion, wherein the atom or ion changes a valence number by reacting with both of a radical and a molecular radical derivative the radical being any of radicals to be generated from the water ionized by irradiation with radiation rays, and the molecular radical derivative being a molecule to be formed from the radicals that are bonded with each other; and a radical derivative blocking substance, wherein the radical derivative blocking substance prevents a substance identical to the molecular radical derivative from remaining, wherein the water, the clay particles, and the recording material precursor are dissolved or dispersed with each other, wherein the gel dosimeter is free from a substance identical to the molecular radical derivative before being irradiated with radiation rays, wherein the gel dosimeter ha lost fluidity by the time irradiation with radiation rays occurs, wherein the molecular radical derivative is oxygen, and wherein the radical derivative blocking substance is a gas that does not contain oxygen.