title: Standardization of 64Cu and 68Ga by the 4π(PC)β-γ coincidence method and calibration of the ionization chamber.
abstract: The paper treats the application of the 4π(PC)β-γ coincidence method for the standardization of the radionuclides (64)Cu and (68)Ga. The general coincidence equations are written. Two types of extrapolation were described and used in measurement: the positron-annihilation coincidence, and the counting of all emitted radiations; both methods are compared with respect to results, advantages and drawbacks. The impurities' content correction was applied. The standardized solutions were used to calibrate the ionization chamber CENTRONIC IG12/20A and to determine the gamma-rays emission intensities.
authors.affiliation: Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, IFIN-HH Bucharest, 30 Reactorului Str. Magurele, jud. Ilfov, POB MG-6, RO 0-77125, Romania. msahagia@nipne.ro
authors.forename: M
authors.initials: M
authors.lastname: Sahagia
authors.forename: A
authors.initials: A
authors.lastname: Luca
authors.forename: A
authors.initials: A
authors.lastname: Antohe
authors.forename: C
authors.initials: C
authors.lastname: Ivan
mesh_terms: D000465:Algorithms; D002138:Calibration; D003301:Copper Radioisotopes / Q000032:analysis / Q000737:chemistry* / Q000592:standards*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005710:Gallium Radioisotopes / Q000032:analysis / Q000737:chemistry* / Q000592:standards*; D006207:Half-Life; D038622:Internationality; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000592:standards*; D012015:Reference Standards; D012016:Reference Values
chemical_list: D003301:Copper Radioisotopes; D005710:Gallium Radioisotopes