| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for generating desired isotopes within water rods of nuclear fuel assemblies. <P>SOLUTION: The method includes selecting (S300) a desired irradiation target (110) based on the chracteristics of the target; loading (S310) the irradiation target into a target rod (100) based on irradiation target (110) and fuel assembly (10) properties; exposing (S330) the target rod (100) to neutron flux; and/or harvesting isotopes generated from the irradiation target (110) from the target rod (100). In one embodiment, the securing device includes a ledge collar (500) and/or bushing (501) that support the target rod (100) within a water rod (22) and permit moderator/coolant to flow through the water rod (22). In another embodiment, the securing device includes one or more washers, with one or more apertures drilled therein to hold the target rod (100) in the water rod (22), while permitting coolant/moderator to flow through the water rod (22). <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
