کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9586293 | 1505940 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Oxidation of Sm2+ in β-irradiated Sm-doped borosilicate glasses under laser illumination
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Borosilicate glasses doped with samarium have been prepared. Samples exposed to 4Ã109 Gy of β-irradiation have been investigated by fluorescence measurements, showing a strong reduction process of Sm3+ to Sm2+ ions in the irradiated samples. Oxidation of Sm2+ was observed in this glass as a result of frequency-doubled cw Nd:YAG laser irradiation, but not when using a pulsed titanium-doped sapphire laser. Influence of laser intensity was studied, showing that an increase of the laser intensity could induce complete oxidation of Sm2+ ions. Such effect is not observed at low temperature nor using ultra short laser pulses. The conclusion is that the effect is of thermal origin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 111, Issues 1â2, 1 January 2005, Pages 53-59
Journal: Journal of Luminescence - Volume 111, Issues 1â2, 1 January 2005, Pages 53-59
نویسندگان
E. Malchukova, B. Boizot, G. Petite, D. Ghaleb,