Abstract
The spatial fluxes and energy distributions of fast neutrons and total gamma rays behind spherical shields of polyethylene and graphite have been carried out. A Pu-α-Be source has been used in spherical geometry. Measurements and calculations of the fast neutron spectra behind different thickness of polyethylene and graphite have been carried out. Also the total gamma ray spectra behind different thicknesses of polyethylene and graphite have been measured experimentally. A fast neutron and gamma ray spectrometer with a stilbene crystal was used in the present measurements. The undesired pulses of neutrons or gamma rays were prevented by a pulse shape discrimination technique based on the zero crossing method. The calculations of the fast neutron fluxes were performed by using the ANISN Westinghouse version (ANISN-W) code with the EUR LiB 15 5 cross section library. The obtained data were displayed in the form of spectra and flux distributions and attenuation curves. Comparison between the measured and calculated fast neutron spectra for polyethylene and graphite shows a reasonable agreement for all energies and for all investigated thicknesses. Also comparison between polyethylene, graphite and water from the radiation moderation and attenuation point of view have been carried out.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
