کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1876511 | 1042018 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Probability correction for the analytical simulation approach to calibrating γ-ray cylindrical detectors for environmental measurements
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Probability correction for the analytical simulation approach to calibrating γ-ray cylindrical detectors for environmental measurements Probability correction for the analytical simulation approach to calibrating γ-ray cylindrical detectors for environmental measurements](/preview/png/1876511.png)
چکیده انگلیسی
Marinelli beakers increase geometric efficiency of detection in the γ-spectrometry of low-activity environmental samples by positioning the sample in close proximity to the detector. A probability correction has been introduced to the analytical simulation approach proposed previously (Nafee et al., 2009) for calculating detection efficiencies of γ-ray cylindrical detectors using extended low- and high-volume Marinelli beakers. Improved expressions for the self-attenuation and the coincidence summing effects at short source-detector distances have also been included in the analytical algorithm. A remarkable agreement between the measured and calculated efficiencies was observed as a result. Deviations of results calculated in this way from experimental values are twice as small as were observed with the previously reported analytical methods (Abbas, 2001; Nafee et al., 2009).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 69, Issue 7, July 2011, Pages 1019-1026
Journal: Applied Radiation and Isotopes - Volume 69, Issue 7, July 2011, Pages 1019-1026
نویسندگان
S.Sherif Nafee,