کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1483966 1510514 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In situ observation of β-ray induced UV optical absorption in a-SiO2: Radiation darkening and room temperature recovery
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
In situ observation of β-ray induced UV optical absorption in a-SiO2: Radiation darkening and room temperature recovery
چکیده انگلیسی
We studied the optical absorption in the 3.0-6.2 eV range induced in bulk amorphous SiO2 by β-ray irradiation up to ∼1 MGy at room temperature. The induced absorption was measured in situ both during irradiation and in the post irradiation time. Our data evidence Eγ′ center as the main defect induced by irradiation and the partial decay of their absorption band at about 5.8 eV after irradiation. A quantitative analysis of the time evolution of the induced absorption shows that the transmission recovery observed after irradiation is compatible with the reaction of radiation-induced defects with H-related (H2, H2O) species diffusing in the amorphous matrix.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 355, Issues 18–21, 1 July 2009, Pages 1042-1045
نویسندگان
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