公开(公告)号：US20180019033A1

公开(公告)日：2018-01-18

申请号：US15545906

申请日：2015-01-29

Applicant: Areva GmbH

Inventor： Beatrice Schuster ,  Robert Bathelt ,  Karl Goesswein

IPC: G21G1/02 ,  H05H6/00

Abstract: The invention provides a method of preparing irradiation targets for radioisotope production in instrumentation tubes of a nuclear power reactor, the method comprising the steps of: providing a powder of an oxide of a rare earth metal having a purity of greater than 99%; consolidating the powder in a mold to form a round green body having a green density of at least 50 percent of the theoretical density; and sintering the spherical green body in solid phase at a temperature of at least 70 percent of a solidus temperature of the rare earth metal oxide powder and for a time sufficient to form a round sintered rare earth metal oxide target having a sintered density of at least 80 percent of the theoretical density.