Attenuation coefficient of 123 keV gamma radiation by dilute solution of ferrous sulphate

Linear and mass attenuation coefficients of 123 keV gamma radiation from Co57 by dilute solutions of FeSO4.7H2O salt are studied for varying concentrations. The mixture rule for theoretical calculation of attenuation coefficients is developed for solutions. The study explores the validity of the expected exponential attenuation absorption law for gamma radiation in solutions and also provides alternative method for direct determination of linear and mass attenuation coefficients of soluble salts in solid form without obtaining them in pure crystalline form. (author). 12 refs., 1 tab., 1 fig