Effect Gamma-ray on structure and mass attenuation coefficient of Hydroxyapatite Ca10(PO4)6(OH)2, in Bovine Bone

Hydrothermal treatment procedures were employed, to generate hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂ ,(HAP) powder, from the femur and ribs of bovine bone samples. This investigation delves into the effect of gamma rays, from a Cs-137 activity equal to 220 µCi at integral doses of 20 kGy, on the surface structures, vibration properties, and attenuation coefficient of HAP, in the bovine femur bone and ribs. The mass attenuation coefficients for HAP powder were registered as E= 511 keV, with 1276 keV gamma energy released from the 22Na radioisotope, and 662 keV gamma energy released from the 137Cs radioactive isotope. We used the Nist XCom program to calculate the mass attenuation coefficient of HAP before and after radiation for photon energies ranging from 0 keV to 100 keV.