Author: E. Osae 1
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  • 1 NNRI/GAEC Neutron Activation Analysis Laboratory, Department of Physics Legon P.O. Box 80 Accra (Ghana)
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A theoretical investigation of the feasibility of producing a molybdenum-99: technetium-99m generator from MoO3 using a 30 kW Miniature Neutron Source Reactor (MNSR) has been made. At the rated thermal neutron flux of 1012 n·cm–2·s–1 and irradiation time of 2.5 hours per day, for 8 consecutive days, activities of 7.1 mCi and 5.2 mCi were calculated for99Mo and99mTc, respectively. A 20 g sample of 99.5% chemically pure MoO3 was used. The advantage for operating the reactor for 8 days instead of 6 days would be an increase of 11.4% and 15.5%, respectively, in the amount of99Mo and99mTc produced. it is calculated that an optimum irradiation scheme is achieved when the reactor is operated for an extended period of 5 hours a day for 5 days a week at a lower flux level of 7.5·1011 n·cm–2·s–1. With this optimum operation scheme, there would be an increase in the weekly specific activity of 36% and 37.9% for99Mo and99mTc, respectively.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
per Year
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Founder Akadémiai Kiadó
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
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ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)