title: Methods of producing radionuclides for spectrometric gamma-ray sources and their standardization--2. Europium-152.
abstract: 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.
authors.affiliation: All-Union Research Institute of Physico-technical and Radiotechnical Measurements, Mendeleevo, Moskovskaya obl., U.S.S.R.
authors.forename: V N
authors.initials: VN
authors.lastname: Danilenko
authors.forename: N P
authors.initials: NP
authors.lastname: Gromova
authors.forename: A A
authors.initials: AA
authors.lastname: Konstantinov
authors.forename: N V
authors.initials: NV
authors.lastname: Kurenkov
authors.forename: A B
authors.initials: AB
authors.lastname: Malinin
authors.forename: S V
authors.initials: SV
authors.lastname: Matveev
authors.forename: T E
authors.initials: TE
authors.lastname: Sazonova
authors.forename: E K
authors.initials: EK
authors.lastname: Stepanov
authors.forename: S V
authors.initials: SV
authors.lastname: Sepman
authors.forename: I N
authors.initials: IN
authors.lastname: Tronova
mesh_terms: D005063:Europium; D005720:Gamma Rays; D011868:Radioisotopes; D013053:Spectrophotometry / Q000295:instrumentation* / Q000379:methods
chemical_list: D011868:Radioisotopes; D005063:Europium