A new ultra-light structure based on the application of open-cell metal foams has been designed and
investigated to determine its ability for attenuation of c-rays and thermal neutrons. Open-cell metal
foam, a unique class of material, has been employed in the structure and is studied in this work where
radiation attenuation abilities of foams and foams filled with water and borated water have been compared
with bulk Aluminum. The c-ray attenuation measurements were performed using c-ray at
0.662, 1.173 and 1.332 MeV photon energies and thermal neutron attenuation measurements were conducted
using a polyenergetic thermal neutron beam. The results show that the metallic foam by itself
attenuates less c-ray as compared to bulk material, while the mass attenuation coefficients of foams filled
with water is higher than that of bulk metals. The thermal neutron experiment, on the other hand, has
shown a dramatic attenuation improvement in foams filled with water and particularly with borated
water as compared to bulk metal and foam.
A new ultra-light structure based on the application of open-cell metal foams has been designed and
investigated to determine its ability for attenuation of c-rays and thermal neutrons. Open-cell metal
foam, a unique class of material, has been employed in the structure and is studied in this work where
radiation attenuation abilities of foams and foams filled with water and borated water have been compared
with bulk Aluminum. The c-ray attenuation measurements were performed using c-ray at
0.662, 1.173 and 1.332 MeV photon energies and thermal neutron attenuation measurements were conducted
using a polyenergetic thermal neutron beam. The results show that the metallic foam by itself
attenuates less c-ray as compared to bulk material, while the mass attenuation coefficients of foams filled
with water is higher than that of bulk metals. The thermal neutron experiment, on the other hand, has
shown a dramatic attenuation improvement in foams filled with water and particularly with borated
water as compared to bulk metal and foam.
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