Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2012-03-30
Atomnaya Energiya, 97, issue 1, 2004, page 27-33 (in Russian)
Physics
Nuclear Physics
Nuclear Experiment
10 pages, including 4 tables
Scientific paper
A method is proposed to use of the mixture of Uran oxide and non-active matrix (e.g., NaCl) and also potassium and lanthanum for determining Ge-detector efficiencies. The preparations containing of known amouts of the U or K, or La were measured by means of the Ge-detector, which a efficiency curve has been obtained through the reference solutions of 241Am, 109Cd, 57Co, 139Ce, 137Cs, 60Co. Results the measurements were compared the activities of the preparations calculated from mass of 235U, 238U, 138La, 40K in the samples, its natural abundance, half lives and intensities of gamma lines. Discrepancy of the activities in the energy range between 163 and 1461 keV does not exeed 7 %. For correct comparison of the activities the coefficients {\omega} were calculated, which took into consideration a varied sorption of gamma-rays in water and in mixture of the Uran oxide and matrix.
Epifanova I. E.
Tertyshnik E. G.
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