کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5467273 1518614 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of cesium diffusion behavior into granite matrix using Rutherford backscattering spectrometry
ترجمه فارسی عنوان
خصوصیات رفتار انتشار سیسیوم در ماتریس گرانیت با استفاده از اسپکترومتری برگشتی رادرفورد
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
چکیده انگلیسی
The characterization of radionuclide diffusion behavior is necessary for performance assessment of granite as a geological barrier for high-level radioactive waste disposal. Rutherford backscattering spectrometry (RBS), a novel nuclear ion-beam technique, was selected in this study because it is suitable for analyzing the concentration gradients of heavy elements in a well-defined matrix and allows measuring diffusion coefficients on a micrometer scale. In this study Cs was selected to represent Cs-135 (a key radionuclide in high-level waste) diffusion in granite. The Cs energy spectrum and concentration deep profile were analyzed and the diffusion coefficient of Cs in granite for three different locations were determined, which were 2.06 × 10−19m2 s−1, 3.58 × 10−19m2 s−1, and 7.19 × 10−19m2 s−1-19m2 s-19m2 s−1, respectively, which were of a similiar order of magnitude. Results from other studies are also compared and discussed in this paper.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 409, 15 October 2017, Pages 305-308
نویسندگان
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