کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8042047 | 1518700 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Radiation stability of SiO2 micro- and nanopowders under electron and proton exposure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
The effects of proton and electron (EÂ =Â 100Â keV, FÂ =Â 5Â ÃÂ 1015Â Ñmâ2) exposure on the reflective spectra of SiO2 micro- and nanopowders in wavelength range from 250 to 2500Â nm have been investigated. It has been established that the reflectance and radiation stability of nanopowders is less than that of micropowders. This effect is caused by the high concentration of radiation defects, which act as surface absorption centers (Esâ² centers) near the energies 5.47 and 4.45Â eV, and peroxide silicon defects (SiOOSi) near the energy 3.84Â eV.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 319, 15 January 2014, Pages 123-127
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 319, 15 January 2014, Pages 123-127
نویسندگان
Chundong Li, M.M. Mikhailov, V.V. Neshchimenko,