A novel method for determination of mass attenuation coefficient of x-rays employing NaI (Tl) detector system and radioactive sources is described. in this paper. A rigid geometry arrangement and gating of the spectrometer at FWHM position and selection of absorber foils are all done following detailed investigation. to minimize the effect of small angle scattering and multiple scatte... https://unitedssports.shop/product-category/soccer-clothing-womens-bottoms-shorts/