DocumentCode :
2625861
Title :
Radioluminescence and scintillation results of horizontal gradient freeze grown aliovalently-doped CeBr3
Author :
Harrison, M.J. ; Linnick, C. ; Montag, B. ; Brinton, S. ; McCreary, M. ; Doty, F.P. ; McGregor, D.S.
Author_Institution :
Semiconductor Materials and Radiological Technologies Laboratory at Kansas State University, Manhattan, 66506 USA
fYear :
2008
fDate :
19-25 Oct. 2008
Firstpage :
2850
Lastpage :
2855
Abstract :
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 CeBr3 were explored in an effort to find the optimal aliovalent strengthening agent. Eight dopants, CaBr2, SrBr2, BaBr2, ZrBr4, HfBr4, ZnBr2, CdBr2, and PbBr2, 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 BaBr2 and PbBr2 were found to clearly decrease total light yield. ZnBr2 and CdBr2 dopants both affected the radioluminescence emission spectrum very little as compared to undoped CeBr3. HfBr4- and ZnBr2-doped CeBr3 exhibited the highest light yields.
Keywords :
Anisotropic magnetoresistance; Crystalline materials; Crystals; Doping; Lanthanum; Lattices; Mechanical factors; Semiconductor materials; Solids; Spectroscopy; Aliovalent doping; crystal growth; scintillation detectors; solid solution hardening;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE
Conference_Location :
Dresden, Germany
ISSN :
1095-7863
Print_ISBN :
978-1-4244-2714-7
Electronic_ISBN :
1095-7863
Type :
conf
DOI :
10.1109/NSSMIC.2008.4774964
Filename :
4774964
Link To Document :
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