کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5402665 | 1392739 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photon cascade emission of Pr3+ ion in alkaline-earth fluorides
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Photon cascade emission of Pr3+ ion in alkaline-earth fluorides Photon cascade emission of Pr3+ ion in alkaline-earth fluorides](/preview/png/5402665.png)
چکیده انگلیسی
Absorption, emission, excitation spectra of CaF2, SrF2, BaF2 crystals doped by PrF3 in concentration ranging from 0.005% to few molar % were studied in 1.4-10Â eV spectral region. Specific type of Pr centres possessing photon cascade emission (PCE active) was observed in all crystals. Concentration of centres monitored by excitation and emission spectra grows superlinearly with increasing of Pr concentration in SrF2 and BaF2 crystals. A new additional absorption band at 7.0Â eV which coincided with excitation band of PCE-active centres was observed in CaF2-Pr crystals. The absorption coefficient of this band grows twice that coefficient of 5.7Â eV band of single Pr centres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 129, Issue 12, December 2009, Pages 1581-1585
Journal: Journal of Luminescence - Volume 129, Issue 12, December 2009, Pages 1581-1585
نویسندگان
E. Radzhabov,