Rare earth halide scintillating material

Abstract

The invention relates to a rare earth halide scintillating material of which the chemical general formula is RE<1-m>CemX<3+n>, wherein RE is one of rare earth elements such as La, Gd, Lu and Y, and the X is one or two of Cl, Br and I, 0.001 <= m <=1 and 0.0001 <= n <= 0.1. The rare earth halide scintillating material has excellent scintillating performance of high optic output, high energy resolution ratio and rapid attenuation.

Description

technical field [0001] The invention relates to the field of inorganic scintillating materials, in particular to a rare earth halide scintillating material. Background technique [0002] Scintillation materials can be used for the detection of high-energy rays such as α-rays, γ-rays, and X-rays, and high-energy particles such as neutrons, and are widely used in nuclear medicine, high-energy physics, safety inspection, oil well logging and other fields. [0003] Scintillation materials are usually applied in the form of single crystals, and in some cases can also be ceramics or other forms. [0004] Different application fields have different performance requirements for scintillation materials. However, for most application fields, it is desirable that scintillation materials have as high a light yield as possible, as short a decay time as possible, and as high an energy resolution as possible. Especially for nuclear medicine imaging devices such as positron emission tomog...

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Problems solved by technology

However, alkaline earth metal ions are heterogeneous impurities after all, and there are differences in radius and valence between rare earth ions. This kind of doping is easy to cause crystal growth defects, and will cause the doping concentration of alkaline earth metal ions in different parts of the crystal due to segregation. Inconsistency, which affects the uniformity of crystal properties

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