کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8209393 | 1532088 | 2016 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
56Mn, 60Co, 18F and 22Na activity measurements by coincidence technique at VNIIM
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 109, March 2016, Pages 378-381
Journal: Applied Radiation and Isotopes - Volume 109, March 2016, Pages 378-381
نویسندگان
Tereshchenko Evgeny, Moiseev Nikolay, Kolodka Alexander,