کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1875711 | 1532090 | 2016 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Prototype of a primary calibration system for measurement of radon activity concentration
ترجمه فارسی عنوان
نمونه اولیه یک سیستم کالیبراسیون اولیه برای اندازه گیری غلظت فعالیت رادون
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کلمات کلیدی
رادون، محصولات فروپاشی رادون، فاکتور هوش منبع استاندارد رادون،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
چکیده انگلیسی
To calibrate measurement devices for monitoring the activity concentration of 222Rn in air, a prototype of a calibration facility is tested using a solid 226Ra source and a high-purity germanium (HPGe) detector. An emanation box was mounted on the detector for online gamma measurements. Inside this box, a 32.8 kBq ±3% 226Ra standard source was placed. An AlphaGUARD control radon monitor was connected to the emanation box with a pumping air system in an open flow mode as a reference monitor. The emanation coefficient of the source was controlled online by comparing the gamma activity of 214Bi (Eγ=609.3 keV), progeny of 226Ra, to that of the calibration source. A standard 137Cs source, installed within the emanation box, was used as a reference for gamma spectroscopy using the HPGe detector, with a total systematic error of 4% and a random error less than 2%. The ratio between gamma measurements and AlphaGUARD was 0.94±0.4; which is within the 9% uncertainties of AlphaGUARD calibration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 107, January 2016, Pages 109-112
Journal: Applied Radiation and Isotopes - Volume 107, January 2016, Pages 109-112
نویسندگان
M.Y.A. Mostafa, M. Vasyanovich, M. Zhukovsky,