title: A simple method for the absolute determination of uranium enrichment by high-resolution gamma spectrometry.
abstract: A simple method for the determination of uranium enrichment using high-resolution gamma spectrometry is presented in this paper. The method relies solely on the gamma-ray emission probabilities of 235U and 234mPa, and an iterative procedure for the least squares fit of a polynomial to a set of experimentally determined data. To ensure the reliability of the 234mPa gamma-ray emission probabilities employed, a new determination of these probabilities was carried out using a combination of gamma spectrometry and Cerenkov counting of a purified 234Th solution. Using these new data, a maximum difference of approximately 5% has been found between the experimental and declared uranium enrichment in a set of solid and liquid samples containing uranium compounds.
authors.affiliation: Unidad de Actividad Radioquímica y Química de las Radiaciones, Comisión Nacional de Energía Atómica, Centro Atómico Ezeiza, Presbítero Juan González y Aragón No. 15 Partido de Ezeiza, Provincia de Buenos Aires, República Argentina. korob@cae.cnea.gov.ar
authors.forename: R O
authors.initials: RO
authors.lastname: Korob
authors.forename: G A
authors.initials: GA
authors.lastname: Blasiyh Nuño