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Measurement of mass attenuation coefficients for YBaCuO superconductor at different energies

2004; IOP Publishing; Volume: 18; Issue: 1 Linguagem: Inglês

10.1088/0953-2048/18/1/016

1361-6668

U. Çevik, H Balta, Şükrü Çelik, İbrahim Karaca, I Kopya,

X-ray Diffraction in Crystallography

The mass attenuation coefficients for Y2O3, BaCO3, CuO compounds, and solid-state forms of YBa2Cu3O7 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 241Am point source emitting 59.5 keV photon energies and a 57Co point source emitting 122 and 136 keV photon energies. The other energies were obtained using secondary targets such as Ta, Bi2O3, and (CH3COO)2UO22H2O. 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.