کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9793788 1514280 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of molecular oxygen formation in irradiated glasses: a Raman depth profile study
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Analysis of molecular oxygen formation in irradiated glasses: a Raman depth profile study
چکیده انگلیسی
Depth profiles experiments have been performed by Raman spectroscopy on three alkali (Na, Li, K) borosilicate glasses irradiated with 1.8 MeV electrons at 1 and 3 GGy. These experiments show that molecular oxygen produced under β irradiation is concentrated near the glass surface according to a depth depending on the irradiation dose. Moreover, we observed that the polymerisation increase is the same in the entire volume sample. The average Si-O-Si angle decrease under irradiation is also homogeneous in the whole irradiated glass volume. From all results, we demonstrate that oxygen migrates up to the glass surface during irradiation without strong interaction with the glass network. Migration of oxygen and probably alkalis takes place through percolation channels with a possible departure of oxygen in some cases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 340, Issues 2–3, 15 April 2005, Pages 209-213
نویسندگان
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