Speaker
Description
The sensitivity of water and iron contents to the attenuation length of neutron deep penetration in concrete is discussed. According to previous researches, the contents of water in radiation shielding concretes varies from about 2 to 20%, and the iron 1 to several %. It is noted that the iron in this study means the frame itself embedded inside concrete against the tensile strain. Since the hydrogen is the most effective nucleus in order to moderate neutron and also iron used for same purpose to high energy neutrons, it is interesting to look how much the attenuation length will be changed as a function of the water content and iron content respectively. The sensitivity study will be performed for variety of concrete compositions, which were measured or reported in literature.