Method of preparing of irradiation targets for radioisotope production and irradiation target
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United States of America Patent
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Jul 14, 2020
Grant Date -
Jan 18, 2018
app pub date -
Jan 29, 2015
filing date -
Jan 29, 2015
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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 consisting of an oxide of a rare earth metal having a purity of greater than 99% and, optionally, an organic binder; pelletizing the powder and optionally the organic binder to form a substantially spherical green body having a diameter of from between 1 to 10 mm; 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.
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