Ghanim Muslim, A., Hadi Jasim, M. (2013). The measurements of neutron Fermi Age for selected Nuclear Reactor shielding materials using the Indium foil technique. , 11(22), 27-32.
Ahmed Ghanim Muslim; Mahdi Hadi Jasim. "The measurements of neutron Fermi Age for selected Nuclear Reactor shielding materials using the Indium foil technique". , 11, 22, 2013, 27-32.
Ghanim Muslim, A., Hadi Jasim, M. (2013). 'The measurements of neutron Fermi Age for selected Nuclear Reactor shielding materials using the Indium foil technique', , 11(22), pp. 27-32.
Ghanim Muslim, A., Hadi Jasim, M. The measurements of neutron Fermi Age for selected Nuclear Reactor shielding materials using the Indium foil technique. , 2013; 11(22): 27-32.

The measurements of neutron Fermi Age for selected Nuclear Reactor shielding materials using the Indium foil technique

Iraqi Journal of Physics
Article 1, Volume 11, Issue 22, 2013, Pages 27-32
Authors
Ahmed Ghanim Muslim; Mahdi Hadi Jasim
Abstract
The Neutron Fermi Age, , and the neutron slowing down density, q (r, ) , have been measured for some materials such as Graphite and Iron by using gamma spectrometry system UCS-30 with NaI (Tl) detector. This technique was applied for Graphite and Iron materials by using Indium foils covered by Cadmium and the measurements done at the Indium resonance of 1.46 eV. These materials are exposed to a plane 241Am/Be neutron source with recent activity 38 mCi. The measurements of the Fermi Age were found to be  = 297  21 cm2 for Graphite,  = 400  28 cm2 for Iron. Neutron slowing down density was also calculated depending on the recent experimental  value and distance.
Keywords
Fermi Age; Slowing down; Indium foil; Cadmium cover; Be neutron source
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