Neutron has been one of the most interesting particle since its discovery. Being an uncharged particle it is more difficult to shield in comparison with the other radiation types. This may be due to the differences of its interaction with matter. The main interaction processes of neutron with a matter may be via (n,p) reaction and thus hydrogenous materials are generally preferred to shield neutron. In this study neutron shielding properties for HAP composites have been investigated. This is done using Phy-X/PSD software.

As it is important to obtain accurate analytical result in an experimental research, this required quality control of the experimental system. Gamma spectrometry system can be used in a variety of different fields such as radiation and medical physics. In this paper the absolute efficiency, peak to valley ratio, and energy resolution of a3′′×3′′NaI(Tl) detector were determined experimentally for 511, 662, 835, 1173, 1275, and 1332 keV photon energies obtained from²²Na,⁵⁴Mn,⁶⁰Co, and¹³⁷Cs radioactive sources.