摘要
The growth and scintillation properties of La0.97(Cl_(0.05)Br_(0.95))_(3):Ce_(0.03) crystals are reported.A 1-inch-diameter as-grown crystal is achieved by applying the vertical Bridgman technique,and one machined single crystal with sizes 18 mm×8 mm×8 mm is acquired.The scintillation properties of La0.97(Cl_(0.05)Br_(0.95))_(3):Ce_(0.03) crystals are presented.Under the excitation of UV(ultraviolet)light,the crystal exhibits two luminescent peaks centered at 358 nm and 382 nm.The light output is about 62000 ph/MeV while the energy resolution(ΔE/E)of this crystal at 662 keV is 4.55%of the full width at half-maximum.Additionally,the crystal photoluminescence decay time constant is 17.7 ns,which is significantly faster than that of LaBr_(3):Ce.The results indicate that the LaCl3 and the LaBr_(3) can form the anion solid solution crystal.The Lax(ClyBr_(1-y))3:Ce_(1-x) crystal is potentionally a promising scintillator.
基金
Supported by the National Natural Science Foundation of China under Grant Nos 51002147,11075147 and 11175169
the Open Project of the State Key Laboratory of High Performance Ceramics and Superfine Microstructure under Grant No SKL201213SIC.
