Attenuation Of Granite

The attenuation coefficient of the gamma rays is measured with energies 295 2 351 9 583 1 609 3 911 1 1460 8 kev for some building materials used in jordan like ceramic alabaster granite bricks concrete and limestone by the researcher awadallah et al.

Attenuation of granite.

Although other materials such as ceramic brick 4 and granite 5 have been tested for their usefulness as shielding materials their linear attenuation coefficient µ is 0 08 to 0 13 cm 1. The energy changes in marble were more severe than those in granite. Among the measured stone samples the mass attenuation values of tuff stone are closest to lead above 661 6 kev. The results of this study indicate that the stone samples have lower mass attenuation values varying in the range from 28 8 to 3 7 compared to lead.

Mass attenuation coefficients were calculated for γ ray energies of 80 9 140 5 356 5 661 6 1173 2 and 1332 5kev and for the sample thicknesses between 1 and 7cm. Granite is the best protective armor against radiation with linear attenuation coefficient 29 2 0 9 m 1 at ener gy 295 2 kev for gamma rays. 2 and they find that among the selected samples the granite is the best protective armor against radiation with linear attenuation coefficient 29 2 0 9 m 1 at energy 295 2 kev for gamma rays. Mass attenuation coefficient of the granite sample decrease sharply in the low energy region then becomes constant in the medium energy region.

That is friction and scattering. Using the estimated crack densities the attenuation behaviour is interpreted in terms of different attenuation mechanisms. The elastic wave attenuation of the plate shaped granite in the 0 direction was stronger than that of the plate shaped marble and it was weaker than that of the plate shaped marble in the 45 and 90 directions. The calculated density of the newly formed cracks reaches higher values for the sandstone than for the granite.