Measurement of mass attenuation coefficients for YBaCuO superconductor at different energies

The mass attenuation coefficients for Y 2 O 3 , BaCO 3 , CuO compounds, and solid-state forms of YBa 2 Cu 3 O 7 superconductor were determined at energies of 57.5, 59.5, 65.2, 74.8, 77.1, 87.3, 94.6, 98.4, 122, and 136 keV. The samples were irradiated using a 241 Am point source emitting 59.5 keV photon energies and a 57 Co point source emitting 122 and 136 keV photon energies. The other energies were obtained using secondary targets such as Ta, Bi 2 O 3 , and (CH 3 COO) 2 UO 2 2H 2 O. The gamma- and x-rays were counted by a Si(Li) detector with a resolution of 160 eV at 5.9 keV. Samples were selected on the basis of known composition and mass densities were measured using a densitometer. The experimental results obtained in this study are compared with theoretical values.