METHOD OF PRODUCING NANOSTRUCTURED TARGET FOR PRODUCTION OF RADONUCLIDE Mo-99 Russian patent published in 2019 - IPC G21G1/08 B82B1/00 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to reactor technology of producing radionuclides and can be used for production of radionuclide molybdenum-99 (⁹⁹Mo) high specific activity (without carrier), which is the basis of creation of radionuclide generators of technetium-99m (^99mTc), which have found wide application in nuclear medicine for diagnostic purposes. Method of producing nanostructured target for radionuclide production ⁹⁹Mo by radiation capture reaction ⁹⁸Mo(n,γ) in form of a matrix made of a silicon or quartz microchannel plate with cavities and channels with characteristic dimensions in range of 50–100 mcm, on the surface of which a molybdenum oxide MoO₃ nanolayer is applied, which thickness is less than recoil atom path length ⁹⁹Mo in nanolayer substance, and buffer, made in form of gas mixture, including nitrogen N₂ and sulfur hexafluoride SF₆. Gaseous buffer is periodically or continuously removed from cavities and channels of matrix and directed for processing for extraction of radionuclide ⁹⁹Mo from molybdenum hexafluoride ⁹⁹MoF₆.

EFFECT: invention simplifies method of producing radionuclide ⁹⁹Mo by avoiding the radiochemical processing of the target after each irradiation thereof in the neutron flow of the reactor.

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