Title :
Scintillation properties of Rb2LiGdBr6: Ce3+ single crystals
Author :
Gul Rooh ; Kim, H.J. ; Park, Heejung ; Sunghwan Kim
Author_Institution :
Dept. of Phys., Abdul Wali Khan Univ., Mardan, Pakistan
fDate :
Oct. 27 2013-Nov. 2 2013
Abstract :
Scintillation properties of a new cerium doped Rb2LiGdBr6 (RLGC) single crystal belongs to the elpasolite family is reported. This material is grown by the vertical Bridgman technique with 1% and 5% Ce3+-concentration (mole %). Under X-ray excitation, two overlapped emission peaks followed by broad band is observed between 350 to 680 nm wavelengths for 1% Ce sample. At 662 keV γ-rays RLGB: 5% Ce3+ crystal shows an energy resolution and light yield of 5.5% (FWHM) and ~ 25,500±2,600 ph/MeV, respectively. Under γ-ray excitation, RLGB: Ce3+ crystals showed four exponential decay time components. Improvement in the scintillation properties is expected with higher the higher Ce-doping. It is expected that this scintillator could be used as a thermal neutron detector due to the presence of Li and Gd ions in the host lattice. Like other inorganic halide scintillators this material is also very hygroscopic.
Keywords :
cerium; crystal growth from melt; lithium compounds; photoluminescence; rubidium compounds; scintillation; solid scintillation detectors; γ-ray excitation; γ-rays RLGB; Rb2LiGdBr6; X-ray excitation; electron volt energy 662 keV; elpasolite scintillation material; exponential decay time components; hygroscopic material; scintillation property; scintillator; thermal neutron detector; vertical Bridgman technique; wavelength 350 nm to 680 nm; Crystals; Educational institutions; Energy resolution; Luminescence; Sea measurements; Temperature measurement;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4799-0533-1
DOI :
10.1109/NSSMIC.2013.6829671
