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  • 1 C. N. R. S. Centre d'Etudes et de Recherche par Irradiation 3A rue de la Férollerie F. 45071 Orleans 02 (France)
  • 2 C. N. R. S.-C. E. A., C. E. N. Saclay Laboratoire Pierre Sue 91191 Gif-sur-Yvette (France)
  • 3 C. N. R. S. Centre d'Etudes de Chimie Métallurgique 15 rue Georges Urbain 94407 Vitry-sur-Seine (France)
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Abstract  

The determination of Ir and Pt in rhodium neutron monitors was investigated via192Ir and199Au after neutron activation, via191Pt and194Au–196Au after proton activation. Ir was determined by instrumental NAA. A chemical separation of gold, with a yield measurement method by a radioactive tracer, was developed for platinum determination after neutron or proton irradiation.