Мeasurement Of The Mass Attenuation Coefficient From 81 kev to 1333 kev For Elemental Materials Al, Cu And Pb

摘要

The mass attenuation coefficients (μ/ρ) for 3 high purity elemental materials Al, Cu and Pb were measured in the γ-ray energy range from 81 keV up to 1333 keV using ~(22)Na, ~(60)Co ~(133)Ba and ~(133)Cs as sources of gamma radiation. Well shielded detector (NaI (Tl) semiconductor detector) was used to measure the intensity of the transmitted beam. The measurements were made under condition of good geometry, assuring that any photon absorbed or deflected appreciably does not reach the detector. The measured values are compared with the theoretical ones obtained by Seltzer (1993).