Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8209393 | Applied Radiation and Isotopes | 2016 | 4 Pages |
Abstract
For modernization of the Russian national activity standard at the Ionizing Radiation Department of the D.I. Mendeleyev Institute for Metrology, a prototype 4Ï(LS)-γ(NaI) coincidence arrangement was created, and applied to the standardization of long-lived 60Co and 22Na and short-lived 56Mn and 18F. Efficiency variation was performed using “grey filters”, high voltage variation and variation of low threshold. The main metrological characteristics of the setup were determined: long-term stability, background, dead time, resolution time and temperature dependence. The results obtained have practical applications. The 18F solution with well-known activity is required for calibration of ionizing chamber used in nuclear medicine. The 56Mn is used for calibration of manganese bath equipment used in neutron laboratory. The results obtained are in good agreement with 4Ïγ(NaI)-counting and 4Ïβ(PC)-γ(NaI) methods of Russian national radioactivity standard. The combined uncertainty (k=2) of results was estimated in the range 1-2%.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
Authors
Tereshchenko Evgeny, Moiseev Nikolay, Kolodka Alexander,