Improvement of the Ca determination accuracy with k0-INAA using an HPGe coaxial detector with extended energy range efficiency calibration

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作者
Jan Kučera
Marie Kubešová
Ondřej Lebeda
机构
[1] Nuclear Physics Institute of the Czech Academy of Sciences,
关键词
-INAA; Ca determination; HPGe detector; High-energy efficiency calibration; Co activity standard;
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摘要
We show that use of the radionuclide 56Co for calibration of the full energy peak efficiency, ε, of a coaxial HPGe detector, in addition to the commonly employed set of activity standards (133Ba, 241Am, 152Eu, 57Co, 137Cs, 88Y, 65Zn), affects significantly the ε values in the high energy region. This change resulted in substantial improvement of the accuracy of Ca determination by k0-INAA via the 49Ca radionuclide, which emits predominantly the 3084 keV photons, as demonstrated by Ca results in NIST SRMs 1547 Peach Leaves, 1633b constituent elements in coal fly ash, and 2711 Montana II Soil.
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页码:671 / 675
页数:4
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