Abstract:
Using the special boron-containing ores in the eastern area of Liaoning Province of China, boron-containing wastes and epoxy as studying object, total mass attenuation coefficients (MAC) of photon for five kinds of materials including ludwigite ore, boron-containing iron ore concentrate, boron rich slag, common boron mud and epoxy at the photon energy from 1 keV to 100 GeV were calculated theoretically, which can provide the data for design of peripheral shielding of radioactive isotopes source, reactor and the particle accelerator. The results show that the addition of boron-containing ores to epoxy leads to obvious variation in total MAC. Photoelectric effect is dominant at the energy ranging from 1 keV to 0.1 MeV. The MAC of boron containing ores varies considerably in this energy range and the K edge of the elements in the ores increases the total MAC greatly. Compton scattering is the main interaction at photon energy from 0.1 MeV to 10 MeV and the total MAC is not sensitive to the photon energy in this range, and the MAC of epoxy is higher than ores in this range. The photon MAC insignificantly increases at photon energy ranging from 10 MeV to 100 GeV and the main interaction is pair production in this range. Boron containing iron ore concentrate is the best photon absorber in this energy range.