کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10142814 | 1646112 | 2018 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
15 lutetium compounds screened for Ce3+ activated scintillation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We report the scintillation luminosities, decay times, and emission wavelengths of eight new Ce3+ activated lutetium scintillators, two of which are also new compounds. Candidate compounds were (1) selected by empirical estimates of densities, bandgaps, and the potentials for Ce3+ activation; (2) synthesized as crystalline granules in arrays of automated furnaces; (3) verified by X-ray diffractometry; and (4) measured by X-ray luminescence spectroscopy and pulsed X-rays. By calibrating with Lu2SiO5:Ce crystals of similar grain size (average 0.5Â mm) we estimate that the luminosities of the eight new scintillators range from 1000 to 27,000 photons/MeV and all show the characteristic Ce3+ doublet emission. The same undoped compounds have intrinsic scintillation with lower luminosities and different emission spectra. While most of these scintillators do not have properties that make them candidates for widespread use, their data will contribute to a deeper understanding of the factors that limit scintillation performance. In addition, we list seven lutetium compounds whose intrinsic scintillation was quenched by the incorporation of Ce3+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 908, 11 November 2018, Pages 325-332
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 908, 11 November 2018, Pages 325-332
نویسندگان
Stephen E. Derenzo, Gregory A. Bizarri, Edith Bourret, Ramesh Borade, Yetta Eagleman, Gautam Gundiah, Christopher Rosen,