Methods of producing radionuclides for spectrometric gamma-ray sources and their standardization—2. Europium-152

✍ Scribed by V.N. Danilenko; N.P. Gromova; A.A. Konstantinov; N.V. Kurenkov; A.B. Malinin; S.V. Matveev; T.E. Sazonova; E.K. Stepanov; S.V. Sepman; I.N. Tronova

• Book ID: 103922156
• Publisher: Elsevier Science
• Year: 1989
• Weight: 297 KB
• Volume: 40
• Category: Article
• ISSN: 0883-2889
• DOI: 10.1016/0883-2889(89)90083-x

✦ Synopsis

The radionuclide 152Eu was produced by irradiating 151Eu2O3 or 151EuCl3 enriched to 98.9% with thermal neutrons. 152Eu was separated from rare-earth impurities by extraction chromatography on a column using 0.6 M nitric acid eluent. The specific activity of the 152Eu was 1-10 Ci/g of Eu. The impurity of the 154Eu did not exceed 0.1%. The activity standardization of 152Eu was carried out by extrapolation of 4 pi (beta, e, x)-gamma coincidences. The relative gamma-ray intensities for 28 gamma-ray energies emitted in 152Eu decay have been measured.