Indian Journal of Science and Technology

Abstract

In this paper, Γ (absorbed dose rate constant) for ¹³¹I is calculated theoretically and is also determined experimentally applying important correction factors. These correction factors include those factors that affect the calculations, from the radioactive source to the sensor volume detector. Particular absorbed dose rate constants were calculated for each discrete line in the photon spectrum of ¹³¹I radionuclide with a yield per decay event >0.01% and the energy >80 keV. Estimation of dose rate for radiation source may be required for planning radiation protection measures, calibrations of radiation instruments or for estimating the absorbed dose to patients receiving brachytherapy.
Keywords: ¹³¹I, Dose rate, Radiation measurement, Radionuclide.