Abstract
The role and effect of stable Ce4+ centers in Ce-doped LuAG single crystal scintillator is further studied by means of measurements of several optical, luminescence and scintillation characteristics. Two LuAG:Ce single crystal samples are compared: in one of them the dominating Ce4+ center is stabilized by high concentration Mg2+ codoping while the other one shows only the presence of stable Ce3+ center. Tailored (Eu, Mg)-doped LuAG single crystal is also prepared to test the presence and thermal stability of hole traps in the host which affect the timing characteristics of Ce4+ scintillation cycle, namely its restoration back to 4+ charge state in last step of the cycle. EPR experiment was also employed at Mg-and (Eu, Mg) doped LuAG samples and the signature of the O- hole center stabilized by Mg2+ ion was clearly obtained.
Original language | English |
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Article number | 7412783 |
Pages (from-to) | 433-438 |
Number of pages | 6 |
Journal | IEEE Transactions on Nuclear Science |
Volume | 63 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2016 Apr |
Keywords
- Ce
- LuAG
- O
- X-ray detection
- gamma-ray detection
- scintillator
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Electrical and Electronic Engineering