کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1850189 1033674 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Estimation of radiation hazard indices from natural radioactivity of some rocks
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Estimation of radiation hazard indices from natural radioactivity of some rocks
چکیده انگلیسی
Different samples of igneous and metamorphic rocks from Egypt and Germany have been considered to measure γ-ray activity concentrations due to naturally occurring, potentially hazardous radonuclides 226Ra, 232Th and 40K. The radiation hazard parameters including radiation equivalent activity, gamma-absorbed dose rate, and external and internal hazard indices have been estimated. The gamma-absorbed dose rates in air of rocks in Egypt range from 4.2 to 128.5 nGy·h−1 with a mean value of 55.3 nGy·h−1. For igneous and metamorphic rocks from Germany, the values of absorbed dose rates fluctuate from 5.1 to 148.6 nGy·h−1, with a mean value of 60.9 nGy·h−1. Generally, it is found that the radiation hazard indices in common igneous rocks are distinctly higher in acidic than in ultrabasic rocks. The results are discussed and compared with the corresponding published data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Science and Techniques - Volume 17, Issue 2, April 2006, Pages 118-122
نویسندگان
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