Calibration of the Ferrous Sulfate Dosimeter by Ionometric and Calorimetric Methods for Radiations of a Wide Range of Energy

Abstract

A detailed investigation of the ferrous sulfate radiation dosimeter was carried out, and GFe++[forward arrow]Fe+++ values [number of ferric ions formed/100 eV absorbed in the dosimeter solution] were determined for a number of [gamma]-, X-, and p -rays of a wide range of radiation energy with an overall accuracy of some [plus or minus]2 percent. Ionization methods of estimation of absorbed radiation dose were employed for 14-MeV X-rays, Co60 [gamma] -rays, Cs137 [gamma]-rays, Ir192 [gamma]-rays, 220-kVp X-rays, 100-kVp X-rays, 60-kVp X-rays, and Y90 [beta]-rays; and particle counting was used for estimating the radiation energy emitted by H3, S35 and P32 0 -rays. An isothermal microcalori-metric method was also used in the calibration of the H3 and p32 radioactive samples, and an adiabatic one for the absorbed dose measurement of the 14-MeV X-rays, the Co60 [gamma] -rays, and the 220-kVp X-rays. The results obtained are in general agreement with most recently published values of other workers for corresponding radiation qualities where these have been investigated.