Аннотация:The radionuclide 99Mo was produced and separated in the process of irradiating powdered mixtures of
molybdenum compounds and buffer particles by 30 MeV protons. The separation is based on the Szilard–
Chalmers effect wherein 99Mo recoil particles are fi xed in inert buffer particles. Two types of targets were
investigated by using mixtures: soluble molybdenum compound–insoluble buffer and insoluble molybdenum
compound–soluble buffer. 99Mo yield equal to 20% with enrichment coeffi cient 18.3 was obtained by using
a target consisting of a mixture of submicron 100MoO3 and Al2O3 particles; the 99Mo yield was equal to
20% and the enrichment coeffi cient 18.3. For a target with the composition 100MoS2 + KCl, making it
possible to separate 99Mo recoil atoms directly into solution, the 99Mo yield was equal to 8.7% and the
enrichment coeffi cient 30.7.