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

A detailed investigation of the ferrous sulfate radiation dosimeter was carried out, and G_ Fe⁺⁺→ _ Fe⁺⁺⁺ values were determined for a number of γ-, X-, and β-rays of a wide range of radiation energy with an overall accuracy of some ±2%. Ionization methods of estimation of absorbed radiation dose were employed for 14-MeV X-rays, Co60 γ-rays, Cs¹³⁷ γ-rays, Ir¹⁹² γ-rays, 220-kVp X-rays, 100-kVp X-rays, 60-kVp X-rays, and Y⁹⁰ β-rays; and particle counting was used for estimating the radiation energy emitted by H3, S35, and P32 β-rays. An isothermal microcalorimetric 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 γ-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.