کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10148092 | 1646516 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Gamma-rays induced color centers in Pb2+ doped CaF2 crystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
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چکیده انگلیسی
Pure and PbF2 doped CaF2 crystals were obtained in our crystal research laboratory. The influence of PbF2 concentration on the color centers induced by γ-and x-rays irradiation were studied. Two broad absorption bands with maxima peaked at 410 and 730â¯nm appear in the optical absorption spectra; the spectra are quite similar in band structure for all samples and for the both radiation. Different bands showed different responses to the irradiation and to the long-term recovery. The most stable color centers are (Fi0) and the dimer P-P (Pb+(1)-Pb2+). These absorption bands remain stable even for trace amount of Pb2+ ions, so CaF2:PbF2 is not a good material for applications in which the new optical absorption bands are undesirable.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 153, December 2018, Pages 70-78
Journal: Radiation Physics and Chemistry - Volume 153, December 2018, Pages 70-78
نویسندگان
Irina Nicoara, Marius Stef, Daniel Vizman, Constantin Daniel Negut,