کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9871631 | 1532132 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct gamma-spectrometric measurement of the 226Ra 186.2Â keV line for detecting 238U/226Ra disequilibrium in determining the environmental dose rate for the luminescence dating of sediments
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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: Direct gamma-spectrometric measurement of the 226Ra 186.2Â keV line for detecting 238U/226Ra disequilibrium in determining the environmental dose rate for the luminescence dating of sediments Direct gamma-spectrometric measurement of the 226Ra 186.2Â keV line for detecting 238U/226Ra disequilibrium in determining the environmental dose rate for the luminescence dating of sediments](/preview/png/9871631.png)
چکیده انگلیسی
In the age determination of sediments according to the luminescence method, it is important to know whether there was secular equilibrium in the Th and U decay series during accumulation of the environmental radiation dose in geological times. This can be investigated via gamma-ray spectrometry, whereby-in the 238U series-214Pb and 214Bi are considered as the indicators for 226Ra-mobility, and 210Pb as the indicator for 226Rn-emanation. In the present work, the direct measurement of 226Ra-which can give extra information on the interpretation of the radioactive equilibrium-is investigated as to its precision and accuracy. Since there is a serious spectral interference on its 186.2Â keV gamma-line (by 235U at 185.7Â keV), various correction procedures were outlined and their performance was checked via the analysis of (certified) reference materials, leading to the recommendation of a “method of choice”.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 63, Issues 5â6, NovemberâDecember 2005, Pages 589-598
Journal: Applied Radiation and Isotopes - Volume 63, Issues 5â6, NovemberâDecember 2005, Pages 589-598
نویسندگان
F. De Corte, H. Umans, D. Vandenberghe, A. De Wispelaere, P. Van den haute,