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A new fast dense scintillator of Zr:GdTaO4 single crystal.
- Source :
-
Journal of Luminescence . May2023, Vol. 257, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- A good quality Zr:GdTaO 4 single crystal with an 8.84 g/cm3 density, higher than the well-known dense scintillator PbWO 4 , was successfully synthesized by the Czochalski method for the first time. The effective segregation coefficient of Zr in Zr:GdTaO 4 is 0.288. The light yield and the energy resolution of Zr:GdTaO 4 are approximately the same as GdTaO 4. The scintillation decay time of Zr:GdTaO 4 contains a fast decay of 9.51 ns, close to the fast scintillator PbWO 4 , and a slow decay of 755.61 ns, which is much faster than that of GdTaO 4 whose fast decay time is 101.82 ns and slow decay time is 3290.52 ns. With Zr4+ doping, the photoluminescence band of GdTaO 4 is blueshifted and the traps are shallowed, which may help accelerate the scintillation decay. As far as we know, the Zr:GdTaO 4 single crystal is the densest scintillator with a less than 10 ns scintillation decay time, which can be used in electromagnetic calorimeters. • A Zr:GdTaO 4 single crystal with an 8.84 g/cm3 density was first synthesized. • Zr:GdTaO 4 crystal contains a fast scintillation decay of 9.51 ns, close to PbWO 4. • Blueshifted luminescence band and shallowed trap accelerate the scintillation decay. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SINGLE crystals
*SCINTILLATORS
*LUMINESCENCE
*PHOTOLUMINESCENCE
Subjects
Details
- Language :
- English
- ISSN :
- 00222313
- Volume :
- 257
- Database :
- Academic Search Index
- Journal :
- Journal of Luminescence
- Publication Type :
- Academic Journal
- Accession number :
- 162386979
- Full Text :
- https://doi.org/10.1016/j.jlumin.2022.119663