New scintillator 6Li2CaSiO4:Eu2+ for neutron sensitive screens

I. Komendo, A. Bondarev,A. Fedorov, G. Dosovitskiy, V. Gurinovich, D. Kazlou, V. Kozhemyakin,V. Mechinsky, A. Mikhlin, V. Retivov, V. Schukin, A. Timochenko, M. Murashev, A. Zharova,M. Korzhik

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2023）

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摘要

In the current study scintillation properties of a recently developed 6Li2CaSiO4:Eu2+ polycrystalline scintillation material have been evaluated. Samples of thin layers of scintillator with thicknesses of 54, 120, and 180 μm were prepared and the scintillation light yield of the samples under alpha particle excitation was estimated to be 12000 ph/MeV. The material with a layer thickness of 180μm shows similar sensitivity to the commercial ZnS:Ag-6LiF based 470μm Scintacor ND screen to moderated neutrons and has less sensitivity to the gamma-quanta. Scintillation kinetics has been estimated to be five times faster than that provided by ZnS:Ag, which makes the reported material prospective for high count rate measurements in pulse mode.

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关键词

Scintillator,Europium,Ionizing radiation,Screen detector,Neutron,Lithium calcium silicate,Scintillating screen

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