Abstract
The oxidation of ferrous ion and the reduction of ceric ion in 0.80 N sulphuric acid by electrons from dissolved P32 and S35 have been studied. The chemical yields (chemical change per unit energy absorbed) obtained agree well with those obtained using X or γ-radiation. The yield is independent of electron energy above about 5 kev. The results show that chemical dosimetry methods may be used for the accurate determination of energy absorption for electron energies as low as 45 kev. or X rays of 200 kev.