Cerium-lithium double-doped cesium-zirconium chloride scintillation crystal, preparation thereof and application of cerium-lithium double-doped cesium-zirconium chloride scintillation crystal in neutron/gamma ray double detection

• Main Authors: WANG BIAO, JIA XINHUI, LI JING
• Format: Patent
• Language: Chinese; English
• Published: 22.07.2022
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMISTRY; CRYSTAL GROWTH; MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; METALLURGY; PHYSICS; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; TESTING; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

The invention discloses a cerium and lithium double-doped cesium chloride zirconium scintillation crystal. The crystal is a Cs2Zrx/(Ce6Li) 1-xCl6 system formed by replacing a ZrCl6 octahedron in the crystal with a non-equivalent unit with a set proportion, the molecular formula of the material is Cs2Zrx/(Ce6Li) 1-xCl6, wherein x is more than 0 and less than 1. A non-equivalent unit co-substitution strategy is disclosed by taking the preparation method of the scintillation crystal as an example, that is, non-equivalent elements are substituted in a form of one unit, and the strategy can be applied to design and improvement of Cs2ZrCl6 crystals. The invention also discloses an application of the cerium-lithium double-doped cesium zirconium chloride scintillation crystal in neutron/gamma ray double detection. Experiments prove that the photoluminescence spectrum of the crystal shows that Ce is successfully doped into the crystal, the self-absorption is very low, Ce < 3 + > emits light at the 430 nm position, and