Discussion on the Conditions of Chemical Dosimetry Using a Titanium Sulfate Solution

Abstract

There are several methods available for the chemical dosimetry of ⁶⁰Co gamma-rays, e.g.the ferrous and ceric sulfate methods. The ceric sulfate method, however, has a lack of stability and reproducibility. So the author developed a simple method for ⁶⁰Co gamma-ray dose measurement which is based on the fact that titanium ion in 0.8N sulfuric acid solution is oxidized to a coloured titanic complex by ⁶⁰Co gamma-rays. In oxygen-saturated system, G (coloured titanic complex) values in 0.8N sulfuric acid solution were between 0.73 and 128 depending on titanium ion concentration. In nitrogen-saturated system, G (coloured titanic complex) value was 0.32 in 0.8N sulfuric acid solution. For the oxygen-saturated system of 2×10^-2M solution of titanium ion, this method is very convenient.