کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1878728 | 1532115 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improving the assessment of activity in samples with non-uniform distribution using the sum peak count rate
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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: Improving the assessment of activity in samples with non-uniform distribution using the sum peak count rate Improving the assessment of activity in samples with non-uniform distribution using the sum peak count rate](/preview/png/1878728.png)
چکیده انگلیسی
In this work a method for the evaluation of the activity when a point source containing 60Co is located in an unknown position within a sample is developed. The method can be applied if the count rate in the 2505Â keV sum peak has an acceptable uncertainty. It is based on the correlation between the apparent efficiency for the 1173Â keV peak and the ratio of the count rate in the sum peak of 2505Â keV and in the 1332Â keV peak. The correlation was observed in the measurements of a 60Co point source located in various positions in a soil sample. The measurements were done with a 47% efficiency n-type HPGe detector. The correlation is also observed in the measurements and simulations done with a Compton-suppressed spectrometer having a 100% n-type HPGe detector. The results obtained with the proposed method are less affected by the uncertainty of the position of the point source than the results obtained using the standard methods of activity evaluation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 81, November 2013, Pages 76-80
Journal: Applied Radiation and Isotopes - Volume 81, November 2013, Pages 76-80
نویسندگان
Rares Suvaila, Iolanda Osvath, Octavian Sima,