Growth and Scintillation Properties of La(Cl0.05Br0.95)3:Ce Crystal

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2013,（8）
• 页码范围: 190-193
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/30/8/088101

摘要

The growth and scintillation properties of La0.97(Cl0.05Br0.95)3∶Ce0.03 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 18mm×8mm×8mm is acquired.The scintillation properties of La0.97(Cl0.05Br0.95)3∶Ce0.03 crystals are presented.Under the excitation of UV (ultraviolet) light,the crystal exhibits two luminescent peaks centered at 358nm and 382nm.The light output is about 62000ph/MeV while the energy resolution (△E/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 17.7ns,which is significantly faster than that of LaBr3:Ce.The results indicate that the LaCl3and the LaBr3 can form the anion solid solution crystal.The Lax (ClyBr1-y)3:Ce1-x crystal is potentionally a promising scintillator.