کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8209639 | 1532095 | 2015 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A calibration transmission method to determine the gamma-ray linear attenuation coefficient without a collimator
ترجمه فارسی عنوان
یک روش انتقال کالیبراسیون برای تعیین ضریب همبستگی خطی گاما بدون یک کولیماتور
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کلمات کلیدی
ضریب تضعیف خطی، اشعه گاما، خود ضعیف،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
چکیده انگلیسی
It is shown that the gamma-ray linear attenuation coefficient of a sample with unknown chemical composition can be determined through a systematic calibration of the correlation between the linear attenuation coefficient, gamma-ray energy and the relative degree of attenuation. For calibration, H2O, MnO2, NaCl, Na2CO3 and (NH4)2SO4 were used as reference materials. Point-like gamma-ray sources with modest activity of approximately 37Â kBq, along with an HPGe detector, were used in the measurements. A semi-empirical formula was derived to calculate the linear attenuation coefficients as a function of the relative count rate and the gamma-ray energy. The method was applied to the determination of the linear attenuation coefficients for K2CrO4 and SiO2 test samples in the same setup used in calibration. The experimental result agreed well with the ones calculated by elementary data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 102, August 2015, Pages 70-73
Journal: Applied Radiation and Isotopes - Volume 102, August 2015, Pages 70-73
نویسندگان
Jong-In Byun, Ju-Yong Yun,