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Neutrons for Science and Industry

Dry-chemical extraction of 99Mo from cylindrical LEU targets

by Tobias Chemnitz (FRM II)

Europe/Berlin
Zoom Webinar

Zoom Webinar

https://tum-conf.zoom.us/j/95452182512 Passwort: 912797
Description

99mTc is the most widely used radioisotope for imaging in nuclear medicine. It emerges via β-decay from is parent nuclide 99Mo, which for its part is generated to over 95 % from the fission of 235U. This process currently takes place in eight major research reactors worldwide, FRM II being the ninth providing additional 99Mo activity starting in 2021/2022. The exchange of the formerly used HEU irradiation targets in favor of LEU targets results in a decrease in volumetric 99Mo activity by as much as 60% as well as an increase in waste volume of up to 200 % for the currently used extraction routes. To counter these difficulties, FRM II has developed an advanced PVD-process for the fabrication of cylindrical monolithic LEU foil targets with a theoretical uranium loading of up to 16 g/cm3. This process is complemented by a dry-chemical extraction process for 99Mo based on the conversion of U and Mo to their corresponding hexafluorides as well as their subsequent photodissociative separation.

Organised by

Dr. Christian Franz
Dr. Christian Lang

Videoconference
Zoom Webinar
VC Room link
https://tum-conf.zoom.us/j/61080686733
Info
Password: 853708