Tough nitrate-based radiation discoloration composite hydrogel dosimeter
Year: 2024
Type: article
Abstract: In the clinical practice of radiotherapy, how to quickly, safely, accurately and economically monitor the irradiation dose or implement quality assurance measures before irradiation has always been a research hotspot in this research field. In this study, the reaction between nitrate ions and free radicals produced by water radiolysis was innovatively used as a dose-response mechanism. A radiation-grafted silica gel acrylic composite was selected as a matrix material to develop a tough radiation composite hydrogel dosimeter with high mechanical strength. The experimental results showed that the hydrogel dosimeter exhibited the best dose-response linear correlation under a sodium nitrate concentration of 0.5 mol/L and sodium formate concentration of 2.5×10-3 mol/L. In addition, the prepared hydrogel dosimeter not only exhibited excellent puncture resistance, non-brittleness, high pressure resistance, and adjustable mechanical properties, but also displayed impressive time stability in practical applications, indicating potential for commercialization.
Authors: TIAN Yuan, HUANG Shitang, MA Jun
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6941103806