DURAZZO, M.CONTUBIA, G.SOUZA, J.A.B.CARVALHO, E.F.U. deRIELLA, H.G.2017-06-022017-06-02DURAZZO, M.; CONTUBIA, G.; SOUZA, J.A.B.; CARVALHO, E.F.U. de; RIELLA, H.G. Development of irradiation targets for 99Mo production by nuclear fission. In: EUROPEAN RESEARCH REACTOR CONFERENCE, March 13-17, 2016, Berlin, Germany. <b>Proceedings...</b> p. 989-998. Disponível em: http://repositorio.ipen.br/handle/123456789/27566.http://repositorio.ipen.br/handle/123456789/27566The use of radioisotopes in medicine is certainly one of the most important social uses of nuclear energy. The 99mTc, generated from the 99Mo nuclear decay, is the most suitable radionuclide for single photon emission computed tomography imaging technique. The 99mTc is supplied as 99Mo/99mTc generators, which provide 99mTc as the 99Mo decays. In Brazil, the generators have been imported. Currently, the world's 99Mo supplying depends on the operation of research reactors which are aged around 40 years and, therefore, are not capable of reliable operation. This situation makes the 99Mo production chain particularly vulnerable. Recent crises in the supply of 99Mo has profoundly affected the distribution of 99Mo/99mTc generators in Brazil and encouraged the starting of the RMB - Brazilian Multipurpose Reactor, which has as one of the objectives to make the country independent in the production of radioactive isotopes for medicine. The success of RMB Project will require the manufacturing technology of irradiation targets for the 99Mo production from nuclear fission. As IPEN in its history has been developing fuel for research reactors, and the manufacture of irradiation targets is based on this type of technology, IPEN began developing the technology to fabricate these targets. The manufacturing processes of two types of targets using low enriched uranium (LEU) are being studied. The first one is based on UAlx-Al dispersion targets, which is being used commercially in Argentina and Australia. The second one is based on thin foils of metallic uranium, which was developed by Indonesia with US support. This paper presents the current status of ongoing activities at IPEN-CNEN/SP related to the development of these two types of LEU irradiation targets for future production of 99Mo in RMB.989-998openAccessdispersion nuclear fuelsisotope productionmolybdenum 99technetium 99research reactorssingle photon emission computed tomographyslightly enriched uraniumipen-mb-1 reactorTexto completo de eventohttps://orcid.org/0000-0003-0435-6082https://orcid.org/0000-0001-8542-3827https://orcid.org/0000-0002-2147-8295