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Luminescence and Scintillation Properties of VUV Scintillation Crystals Based on Lu-Admixed BaY2 F8.
- Source :
- IEEE Transactions on Nuclear Science; Oct2012 Part 2, Vol. 59 Issue 5, p2177-2182, 6p
- Publication Year :
- 2012
-
Abstract
- Nd and Tm-doped Lu-admixed \BaY2 \F 8 crystals were grown by micro-pulling-down method. Lu was added to modify the host matrix to suppress the unwanted energy transfer from exciton levels to the \Tm^3+ 4f-levels. It was found that low Tm and Nd codoping does not bring much improvement of the scintillation performance and that 1%Nd-doped \BaY 0.8\Lu1.2 \F 8 single crystal reached nearly the same scintillation efficiency as the \LaF 3\:Nd8\% one, which is known as a suitable candidate for a VUV scintillator. It is clear there is a considerable room for an optimization of this material by changing the Lu/Y ratio and increasing the content of Nd. On the other hand, very high Tm concentrations (around 20%) suppress the excitonic emission (and also the 4f-4f emission) while increasing the 5d-4f one significantly. [ABSTRACT FROM PUBLISHER]
- Subjects :
- LUMINESCENCE
SCINTILLATION counters
ENERGY transfer
SINGLE crystals
GAMMA rays
Subjects
Details
- Language :
- English
- ISSN :
- 00189499
- Volume :
- 59
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Nuclear Science
- Publication Type :
- Academic Journal
- Accession number :
- 82724980
- Full Text :
- https://doi.org/10.1109/TNS.2012.2197418