Effect of applied mechanical stress on absorption coefficient of compounds

The absorption coefficient of given materials is the parameter required for the basic information. The measurement of absorption coefficient of compounds Al₂O₃, CaCO₃, ZnO₂, SmO₂ and PbO has been taken at different incident photon energies 26, 59.54, 112, 1173, 1332keV. The studies involve the measurements of absorption coefficient of the self supporting samples prepared under different mechanical stress. This mechanical stress is render in terms of pressure up to 0-6 ton by using hydraulic press. Measurements shows that absorption coefficient of a material is directly proportional to applied mechanical stress on it up to some extent then become independent. Experimentally measured results are in fairly good agreement with in theoretical values obtained from WinXCOM