Radioluminescence and scintillation results of horizontal gradient freeze grown aliovalently-doped CeBr3.
Strengthening the crystal lattice of lanthanide halides, which are brittle, anisotropic, ionic crystals, may prove to increase the availability and ruggedness of these scintillators for room-temperature gamma-ray spectroscopy applications. Eight aliovalent dopants for CeBr{sub 3} were explored in an effort to find the optimal aliovalent strengthening agent. Eight dopants, CaBr{sub 2}, SrBr{sub 2}, BaBr{sub 2}, ZrBr{sub 4}, HfBr{sub 4}, ZnBr{sub 2}, CdBr[sub 2}, and PbBr{sub 2}, were explored at two levels of doping, 500 and 1000 ppm. From each ingot, samples were harvested for radioluminescence spectrum measurement and scintillation testing. Of the eight dopants explored, only BaBr{sub 2} and PbBr{sub 2} were found to clearly decrease total light yield. ZnBr{sub 2} and CdBr{sub 2} dopants both affected the radioluminescence emission spectrum very little as compared to undoped CeBr{sub 3}. HfBr{sub 2}- and ZnBr{sub 4}-doped CeBr{sub 3} exhibited the highest light yields.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 966261
- Report Number(s):
- SAND2008-7464J
- Journal Information:
- Proposed for publication in IEEE Transactions on Nuclear Science., Journal Name: Proposed for publication in IEEE Transactions on Nuclear Science.
- Country of Publication:
- United States
- Language:
- English
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