Print Email Facebook Twitter Improvement of LaBr3:5%Ce scintillation properties by Li1, Na1, Mg21, Ca21, Sr21, and Ba21 co-doping Title Improvement of LaBr3:5%Ce scintillation properties by Li1, Na1, Mg21, Ca21, Sr21, and Ba21 co-doping Author Alekhin, M.S. Biner, D.A. Krämer, K.W. Dorenbos, P. Faculty Applied Sciences Department RST/Radiation, Science and Technology Date 2013-06-12 Abstract This paper reports on the effects of Liþ, Naþ, Mg2þ, Ca2þ, Sr2þ, and Ba2þ co-doping on the scintillation properties of LaBr3:5%Ce3þ. Pulse-height spectra of various gamma and X-ray sources with energies from 8 keV to 1.33 MeV were measured from which the values of light yield and energy resolution were derived. Sr2þ and Ca2þ co-doped crystals showed excellent energy resolution as compared to standard LaBr3:Ce. The proportionality of the scintillation response to gamma and X-rays of Ca2þ, Sr2þ, and Ba2þ co-doped samples also considerably improves. The effects of the co-dopants on emission spectra, decay time, and temperature stability of the light yield were studied. Multiple thermoluminescence glow peaks, decrease of the light yield at temperatures below 295 K, and additional long scintillation decay components were observed and related to charge carrier traps appearing in LaBr3:Ce3þ with Ca2þ, Sr2þ, and Ba2þ co-doping. To reference this document use: http://resolver.tudelft.nl/uuid:f0981365-0df0-419e-a54c-78b48e1c344a DOI https://doi.org/10.1063/1.4810848 Publisher American Institute of Physics ISSN 0021-8979 Source https://doi.org/10.1063/1.4810848 Source Journal of Applied Physics, 113 (22), 2013 Part of collection Institutional Repository Document type journal article Rights (c) 2013 American Institute of Physics Files PDF Alekhin_2013.pdf 1.62 MB Close viewer /islandora/object/uuid:f0981365-0df0-419e-a54c-78b48e1c344a/datastream/OBJ/view