کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8181050 | 1526430 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
New fast scintillators on the base of BaF2 crystals with increased light yield of 0.9Â ns luminescence for TOF PET
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
ابزار دقیق
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چکیده انگلیسی
Presently a growing interest to time-of-flight PET is observed in a number of experimental works using LSO as scintillation crystals. We propose to use as scintillators BaF2 crystals and ceramics produced from identical material but with essentially more high light yield in the fast component of emission spectra. A light yield amplification of BaF2 single crystal fast component of 2 to 2.5 times is achieved in crystals annealed in CF4 and doped by scandium at concentration of 0.5 to 2.0Â mol%. Ceramics from BaF2 doped by Sc have amplification factor order of 1.7 to 2.5. One can consider to produce scintillator of size 10Ã10Ã20Â mm3with an improved light transmission of ceramics in the range (200-250)Â nm up to single crystal level and with a light yield of 0.9Â ns component at the level of 3000 to 4000Â ph/MeV. Another promising scintillator obtained in our collaboration is BaF2:Tm3+. In this case one can have a scintillator in UV range with a time decay 0.9Â ns and a strongly decreased yield of BaF2 slow component.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 695, 11 December 2012, Pages 369-372
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 695, 11 December 2012, Pages 369-372
نویسندگان
D.M. Seliverstov, A.A. Demidenko, E.A. Garibin, S.D. Gain, Yu.I. Gusev, P.P. Fedorov, S.V. Kosyanenko, I.A. Mironov, V.V. Osiko, P.A. Rodnyi, A.N. Smirnov, V.M. Suvorov,