Author/Authors :
Morioka، نويسنده , , Atsuhiko and Sato، نويسنده , , Satoshi and Kinno، نويسنده , , Masaharu and Sakasai، نويسنده , , Akira and Hori، نويسنده , , Junichi and Ochiai، نويسنده , , Kentaro and Yamauchi، نويسنده , , Michinori and Nishitani، نويسنده , , Takeo and Kaminaga، نويسنده , , Atsushi and Masaki، نويسنده , , Kei and Sakurai، نويسنده , , Shinji and Hayashi، نويسنده , , Takao and Matsukawa، نويسنده , , Makot، نويسنده ,
Abstract :
The neutron penetration and the activation characteristics of the boron-doped low activation concrete were investigated for irradiation of 2.45 and 14 MeV neutrons. The shielding property of the 2 wt% boron-doped low activation concrete is superior to that of the 1 wt% boron for the thermal neutron, on the contrary to no clear difference for the fast neutron. The total activity detected in the boron-doped low activation concrete was about one hundredth of that in the geostandard sample at more than 30 days cooling time. The total activity of the boron-doped concrete by major nuclei does not depend on the boron density for the 14 MeV neutron irradiation.
